Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbea42c03ca47cce…

MALICIOUS

PDF

73.9 KB Created: 2021-03-19 06:24:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 69d328a0594d075c9a67d47a2304bbcf SHA-1: 892be782bc04bacf8dc1248e478f8a680d42a68c SHA-256: fbea42c03ca47cce5c7cf1e0f5d5327a32ecc2849be60b972150717dc25f0a76
186 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 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
  • 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.
  • 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://soxebez.ru/123?utm_term=car+km+log+book+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4475216/normal_5fd1aceed57a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446511/normal_60392750d7633.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476302/normal_5fe017bcc4f25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479222/normal_6030927d72996.pdfIn PDF document text
    • https://kivisibef.weebly.com/uploads/1/3/0/7/130775328/rivupufubuzowi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469116/normal_5ff65b527843f.pdfIn PDF document text
    • https://serirufudo.weebly.com/uploads/1/3/4/7/134712976/9965610.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455669/normal_5fc5de68b5974.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421360/normal_603598ea6510c.pdfIn PDF document text
    • https://cdn.sqhk.co/suzagofi/ihcgf6t/55046552760.pdfIn PDF document text
    • https://wuneregogituweg.weebly.com/uploads/1/3/4/6/134686440/7819981.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422136/normal_5fcedf6372fb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386363/normal_60112ea4eb2a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475392/normal_60206f8724472.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422137/normal_5ff30eb5ee4e1.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/w4Bjegh/61339863894.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3bcdeb60-9876-4d14-bc0a-1dd1632c647c.filesusr.com/ugd/16a96a_a95ad1f374ea426eba79dc8f85594df9.pdf?index=trueIn PDF document text
    • https://56db2a4d-09ce-4ff6-a558-abb1d6727cd4.filesusr.com/ugd/003b86_affb60a26eac4c2f95a36254e3a9d564.pdf?index=trueIn PDF document text
    • https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_da3ee41cac56499aad91bde9a3cea1f4.pdf?index=trueIn PDF document text
    • https://720c7b34-a033-4bf0-83ea-6be17de98aa2.filesusr.com/ugd/03ef8e_feb97559260542aeba195ded02d6678f.pdf?index=trueIn 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_off0000e4b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B5 5068 bytes
SHA-256: 787d4a92d801eac927b00e5183e404ad487ba04d7c408531deef271cb555436b
font_01_sfnt_off0000f5e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E0 10772 bytes
SHA-256: 55351cada4c3ed61f0be62cc0cc6cc5a9d36baba8b04aa355482a7bc2ea633a8

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