Malicious PDF — malware analysis report

Static analysis result for SHA-256 a501df662d524efa…

MALICIOUS

PDF

92.2 KB Created: 2020-12-21 18:48:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6388596eec273321dec1e0a172b3a211 SHA-1: b24d0a8581eeae7d0336c5601a8e81db7e93cb0d SHA-256: a501df662d524efa661f162714d9fb7ce4c49d71b74ac31cb297bf106798f5fb
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to PDF files, suggesting a link farm or redirection scheme. The primary malicious URL identified is traffking.ru, which is likely used for phishing or scamming purposes. ClamAV and ML heuristics confirm the malicious nature of the PDF, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffking.ru/strik?utm_term=goal.+com+england+championship PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422180/normal_5faef93cdf6d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f90b40211687.pdfIn PDF document text
    • https://lumozilupive.weebly.com/uploads/1/3/4/3/134336046/lukak.pdfIn PDF document text
    • https://darurirajilubi.weebly.com/uploads/1/3/4/3/134318819/mabevuf.pdfIn PDF document text
    • https://vanawolibonute.weebly.com/uploads/1/3/4/3/134344109/mepamisazonepirebasa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369317/normal_5f9308981f7b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408601/normal_5fd0393914e0d.pdfIn PDF document text
    • https://xidalivukudupet.weebly.com/uploads/1/3/4/3/134319957/715116.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375088/normal_5fc7b13ed79f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420775/normal_5fceab86cb9c7.pdfIn PDF document text
    • https://zobegutibeg.weebly.com/uploads/1/3/4/9/134902349/rezerapitorolo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454171/normal_5fcdf56543b97.pdfIn PDF document text
    • http:///\/arenatv.sk\/tv-program\/,BN:ArenaIn PDF document text
    • http:///\/www.skysports.com\/,BN:SkyIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mejobu/primary_open_angle_glaucoma_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/vufigorijatula.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/36246152799.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/retencion_de_placenta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ed1bb6a-e6e0-4513-a681-f47ed0b46fd0/pfaff_tiptronic_2040_parts.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://scripts.sil.org/OFLIn 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_off00010b1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1D 5456 bytes
SHA-256: 6618c940694320b1c93654308d36187dd71cec786ad33746a07ccaff779b4484
font_01_sfnt_off00011d88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D88 15240 bytes
SHA-256: a2c9bf0003eb032aa317c746b649294d8101ae12729a3903086242ef7f3e01b0
font_02_sfnt_off00014e27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E27 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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