Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6ad0a06c41566c1…

MALICIOUS

PDF

84.3 KB Created: 2021-09-04 12:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 5e02eb0f0d615a02c841c92643da6995 SHA-1: 85028e1e88735f717bb69b22403418ad3fc91024 SHA-256: a6ad0a06c41566c15c121abfadba69ec1f7454a6be6aff17e7a1e11aa78d5980
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to host malicious content or phishing lures. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://pixomot.ru/uplcv?utm_term=frigidaire+microwave+convection+oven+manual PDF link annotation
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607e97c6354b9---631352958.pdfIn PDF document text
    • http://bouncebodysupplements.com/newerac2c/userfiles/file/pupabo.pdfIn PDF document text
    • http://ilksolar.com/Images/Media/files/88368399955.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/49609dc96c86f917f0ea1734e434157f/36214606411.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/csse745ai632el3m5e0tp0mkk0/dirasatoxofegebomuda.pdfIn PDF document text
    • https://dodatkireklamowe.pl/web/uploads/files/23647336269.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f0219284943---25067984454.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16116a0d26c346---jakisiserogufuwej.pdfIn PDF document text
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/0df902d5cb5d6724bedca21ea6f5d008/jodabipelozubidi.pdfIn PDF document text
    • http://rjbmachinery.com/d/files/88281234397.pdfIn PDF document text
    • http://happyland-nsk.net/ckfinder/userfiles/files/pipinugo.pdfIn PDF document text
    • http://www.sec-ollivier-associes.fr/www/upload/file/41521570205.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/203c86db03ed6833765819cc04438357/14661479007.pdfIn PDF document text
    • http://pascalparrot.com/uploads/assets/file/lasubapifoli.pdfIn PDF document text
    • http://facilitymanagementassociates.com/survey/userfiles/files/15684593957.pdfIn PDF document text
    • http://clinicaveterinariacene.com/userfiles/files/jaxisofenabatutiguseno.pdfIn PDF document text
    • http://stpetersame.com/clients/9/91/91902b33218228c9a3691be2563b71f1/File/46432222674.pdfIn PDF document text
    • http://dafangtour.com/fckeditor/userimages/file/vofidesitositanugezu.pdfIn PDF document text
    • http://bfo-walkforhope.com/clients/e/eb/ebd0efab9cd97e953e90891d9eec7aad/File/80001529519.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf22be24419---gogipiwevobesiwono.pdfIn PDF document text
    • http://meyergarden.com/ckfinder/userfiles/files/mojukowaviniwagedumo.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/7aa882e0e36b5186f4d1bd5c2e34b19f/84986081494.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/d81e1436b2896277ab0a149b22ec5ff6/vifiton.pdfIn PDF document text
    • https://lapdonline.org/file/68537271026.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_off0000e752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE752 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ff64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF64 16872 bytes
SHA-256: a352056cb063a1e85b5b7dd10b48e934e4f9ceecb6a818427f6897ce2e5a8cba
font_02_sfnt_off00012ac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AC7 10776 bytes
SHA-256: ecaadda874bb433366d2e465910355ab2e289d16dbfe52ebc950cd4d19fd2dc3

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