Malicious PDF — malware analysis report

Static analysis result for SHA-256 73ee7a3f4313a717…

MALICIOUS

PDF

110.2 KB Created: 2021-08-13 22:37:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 3ecd8374223b8227e9f87c18f89b7700 SHA-1: 8924d0f6c0b67a1c3700e1159114218a45d03298 SHA-256: 73ee7a3f4313a7172bcedbb0c48a142900c98dd32e9c2c5ba80b6405e58b6ffa
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9896

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ketchas.ru/uplcv?utm_term=peter+drucker+managing+oneself+quotes PDF link annotation
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1607f191216a59---69595618350.pdfIn PDF document text
    • http://murphysbeads.com/clients/54316/File/86919132548.pdfIn PDF document text
    • http://purofirstli.net/userfiles/file/74797663806.pdfIn PDF document text
    • https://gotoko.com/cmsv2/upload/files/sufegavebigujatudinesexu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9db5cf3b9---tefuxemola.pdfIn PDF document text
    • http://nextgt.eu/uploads/file/61555997525.pdfIn PDF document text
    • http://yaeram.com/userData/board/file/76277418569.pdfIn PDF document text
    • http://lateonsettay-sachs.org/userfiles/file/mifimukopedow.pdfIn PDF document text
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/7f696bde8a24e5fe9748093e6bfb7a5e/94518204410.pdfIn PDF document text
    • http://papaicountrylodge-longstay.com/user_img/files/51234043923.pdfIn PDF document text
    • https://maturana.cl/upload/file/51146677011.pdfIn PDF document text
    • http://gesht.ru/admin/ckfinder/userfiles/files/16319939404.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160edc44313b5e---33532655447.pdfIn PDF document text
    • https://kontiko.com/ktkweb3/images/upload/files/xigujidanimanige.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af611e1b5ef---58851804646.pdfIn PDF document text
    • https://tanthueviet.vn/img_data/files/8522399276.pdfIn PDF document text
    • http://federicozucchettiarchitetto.eu/userfiles/files/58336713918.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/93b7226da406f00bd423d17ca6192838/54573680758.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bda5043a04c---24739245154.pdfIn PDF document text
    • http://zelene-centrum.cz/webpagebuilder/ckfinder/userfiles/files/47982719887.pdfIn PDF document text
    • http://caigeshi.com/uploadfile/file/2021052905362573499.pdfIn PDF document text
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/bdec933d991deaa89eca3b120f039235/kizizajiremi.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16091159dd8c09---21644666389.pdfIn PDF document text
    • http://hkt-optics.com/hkt/images/userfiles/file/48553166482.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608504fcab8c7---58645680284.pdfIn PDF document text
    • http://ithaca1966.com/clients/8/85/85e9e0a76fddb83d7689cebc6ab07fae/File/kagenomiwigelefazexujas.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000145ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145AD 20080 bytes
SHA-256: bcf82d66b1b490d4a2cf9342d6bdd32c686a74ffda7126e71156866ad22b7d07
font_01_sfnt_off00017887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17887 11160 bytes
SHA-256: 60cb63ab16d5bb25e988940b0ff65397624909a80ff645e5b9a0c5f91c476658
font_02_sfnt_off0001921c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1921C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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