Malicious PDF — malware analysis report

Static analysis result for SHA-256 2418b90559640e21…

MALICIOUS

PDF

82.1 KB Created: 2021-06-25 23:56:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: f1e734aade1e7652d4d59ba723906955 SHA-1: e9a6f9bd8616ac87720e666d8e2103736562b96a SHA-256: 2418b90559640e21d5b24722d9b1a80d406b4a97bfba374b9611b1fdd2cff51c
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains numerous links, many pointing to compromised WordPress sites, and employs a 'password-protected archive' lure, instructing the user to download an archive and use a provided password. This suggests the document's purpose is to trick users into downloading and decrypting a malicious payload, likely malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://pistant.ru/uplcv?utm_term=xenoverse+2+extra+dlc+pack+2 PDF link annotation
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b2f0ed010---mifogawanevavavom.pdfIn PDF document text
    • https://tcremich.lu/files/files/xutavumidaxetol.pdfIn PDF document text
    • http://wagnerfamilyreunion.com/clients/866685/File/22783260060.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/ve024o6mpfqf0a9arq5vurmkvq/87983653511.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a1c9e4d8f9b---50428822706.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608e9894d9aea---sefiguwoxokoritanaliw.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210512015121916.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093e45c7c248---23470749554.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/a9dbd2d70b6623b7356c0edc10bd388f/rarekowenulovot.pdfIn PDF document text
    • http://dallapietamarchisio.it/userfiles/files/bazumuzapafobemejefeto.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9b24fbec9eb142b076e0e116925ed5ae/wibuwunajuredesak.pdfIn PDF document text
    • https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/0d639ee4eecbde72682511cdca165916/85614213949.pdfIn PDF document text
    • https://mudraconsultancy.com/uploads/files/fumoduravinesupimelunufil.pdfIn PDF document text
    • http://porpora.biz/imagenes/imagenes_contenidos///32136147979.pdfIn PDF document text
    • https://www.rekalibracija.com/wp-content/plugins/super-forms/uploads/php/files/238f7b5c2ea6e7a9b0a7909fdcd3cbf0/88395637038.pdfIn PDF document text
    • http://xedaptap.net/userfiles/file/86365015070.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16084572092da0---jogabokiseruf.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c2b42767b7a---jinubuwe.pdfIn PDF document text
    • http://mhinflatable.com/upload/file/rogapetofuledagenu.pdfIn PDF document text
    • http://kashima.cc/userfiles/file/13911857299.pdfIn PDF document text
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/3b2d7f34f541c88271901587909ec11f/vexinekalatej.pdfIn PDF document text
    • 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_off0000cf79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF79 27156 bytes
SHA-256: ff1a5cf372e042d01632f278753e6d9fe4d37ad26986040857fde36f25a39c21
font_01_sfnt_off00010a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A1E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12235 10804 bytes
SHA-256: 51424f3fbcc9623d64cc27d8dbe3bdb26994264f4ddacfa5a7e84b45e2a4cf3b

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