Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a2c201db6fcda0…

MALICIOUS

PDF

70.7 KB Created: 2020-12-01 22:59:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: b17ed756b595ef2d40eecde1e4ba00c0 SHA-1: baccba4423939ba863f962a67f92c6d5c3c7e780 SHA-256: 30a2c201db6fcda053dba34a4f8fe26d78f07def81d1c3a9f0ad4e6df8408fde
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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/123?utm_term=plantronics+vista+m22+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408582/normal_5fb3d8bebaddb.pdfIn PDF document text
    • https://jibokogemi.weebly.com/uploads/1/3/4/7/134767321/6448447.pdfIn PDF document text
    • https://favasebuwakule.weebly.com/uploads/1/3/4/3/134328846/ec5ae59b1ff.pdfIn PDF document text
    • https://lasebotoxuxuxir.weebly.com/uploads/1/3/4/7/134729765/1332835.pdfIn PDF document text
    • https://sapujufokobifaj.weebly.com/uploads/1/3/4/8/134847621/kifeporavizobezarug.pdfIn PDF document text
    • https://zovodexipelozas.weebly.com/uploads/1/3/4/4/134401167/namotuxufemomunitaz.pdfIn PDF document text
    • https://wufenimikefi.weebly.com/uploads/1/3/4/3/134366244/4261.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/anemia_falciforme__uma_doena_hereditria_enem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ffdf32d-8753-4291-a5db-5e8411f92886/81666503308.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/extracorporeal_life_support_organization_registry_report_2012.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/initiative_job_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/limolorerosuninak.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d72b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD72B 5140 bytes
SHA-256: 39e49af0b37de35868dab358033868cb32e570d5a1ba820b4a5cf7f68c52f993
font_01_sfnt_off0000e898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE898 10928 bytes
SHA-256: 55554a1831f9124d2096560965959101b3ffb54ea7ed87cf5984af6d5e08e791

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