Malicious PDF — malware analysis report

Static analysis result for SHA-256 117c76d443d205e2…

MALICIOUS

PDF

88.7 KB Created: 2021-07-14 01:31:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 9667cdc95c61362e6a8a904b56be0c9b SHA-1: d8ca66b34a77c0fac48f78f32071aa8728553d09 SHA-256: 117c76d443d205e26447a8ace64f70c799e3f432693aaf654222c3f013689de6
236 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains heuristics indicating it is a malicious phishing document. It explicitly instructs the user to disable security software and to copy/paste content into a command-line interface, which is a strong indicator of an attempt to execute malicious code. The presence of multiple links to compromised CMS upload directories further supports the malicious intent, likely serving as a distribution point for further stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://www.sehersirin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f80955eeaa---pizobadopividosutularob.pdf In PDF document text
    • http://banhangcongnghe.com/upload/FCK/file/47745614164.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/q6j7stslgc8krbci5djdmfqoqt/61706557209.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/2ca8522c9dd6e8164d4e18eb5a805f19/ligekazedawe.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ichgdcqho7dsr82rdci6c1jvt0/bifefexurekikusonut.pdfIn PDF document text
    • https://jcmimoveis.com/userfiles/file/xuliwimizezapof.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608553e02252e---kujeju.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/nuth34j2ucsvtu25m5jq8p4imj/41475544702.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160700f108b9e4---belamefotaranololufurob.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/53a5debfb400d764ddddfe841cb94790/25000364867.pdfIn PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/e2faf9d8360bfa922866db2837b82134/tidotelazijageg.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078692e9b43d---naranigemuwufemewod.pdfIn PDF document text
    • http://sghscsjamarai.org/guruhargobind/userfiles/file/fowirozuzirufonizabolojuv.pdfIn PDF document text
    • http://gentlemensquartersbarbershop.com/wp-content/plugins/super-forms/uploads/php/files/9a5cd4930779bf88098bc1bb037877f3/13521265641.pdfIn PDF document text
    • https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/0e3c796faaae9241eca0a1fa7c57619d/rawak.pdfIn PDF document text
    • http://biomisszio.hu/tmp/19990847327.pdfIn PDF document text
    • https://nusantarabet4d1.com/contents//files/mitebi.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d43012377a---22689382070.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddeb18de0c5---lepemo.pdfIn PDF document text
    • https://htchninc.com/d/files/29668698845.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/zofogixamotekugeloxon.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160ca411f97e31---7809425137.pdfIn PDF document text
    • https://kompaspt1.com/contents//files/xugufalipopoji.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ad29c14db94---66369005360.pdfIn PDF document text
    • https://o-dance.com/upload/files/58327210555.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=need+permission+from+desktop+to+delete+folderPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF878 10568 bytes
SHA-256: f101c2370ef57b8bab4b41b7e5ced7c8ee4794c9d9e780f173339a2b18c76065
font_01_sfnt_off00011081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11081 17360 bytes
SHA-256: dbce3a13780df69a9de22d9a43502fca34f3a079a9c1a53fea84176ee9d9df2d
font_02_sfnt_off00013d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D59 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.