Malicious PDF — malware analysis report

Static analysis result for SHA-256 80734e86142e097f…

MALICIOUS

PDF

78.4 KB Created: 2020-11-16 21:11:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 434748ec2f169c748c10964dd63a62de SHA-1: 10aa0b8ce7cc2051b332a4e89518aac623f895f1 SHA-256: 80734e86142e097f4c57b8e37af699d7da65209f7822352eab30aa20cc845e9c
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://trafffi.ru/123?utm_term=champion+spark+plug+rc12yc+walmart PDF link annotation
    • https://pisanofinupu.weebly.com/uploads/1/3/1/4/131437881/boxiwukulif_galupixatejove.pdfIn PDF document text
    • https://pixijitawe.weebly.com/uploads/1/3/4/5/134593468/121350.pdfIn PDF document text
    • https://kipujoguburaza.weebly.com/uploads/1/3/4/3/134321983/zuforop_wubajaloduper.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/26558947256.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/monat.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/biomedical_nonprofit_crossword_clue.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/how_to_convert_file_to_word_document_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b5f13db-4cd9-425c-b551-852bdea41ec5/womudosizodegewatelaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bac9ed9b-ffc0-44ea-b617-39027981339c/62104696114.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/boneli.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/architecting_with_google_cloud_platform_specialization_cost.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

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_off0000e847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE847 5576 bytes
SHA-256: 33234ee8558b610fb1aef07b5e3c5c58ed2b6157c1c4be1ef0a2ca0be0fcd36a
font_01_sfnt_off0000fb30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB30 10472 bytes
SHA-256: cbe818f2e176c59615e0ddfade3b676e607285af1ed75e376b3381d283e42f5b
font_02_sfnt_off00011eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EB4 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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