Malicious PDF — malware analysis report

Static analysis result for SHA-256 f001b5dc8a75fab2…

MALICIOUS

PDF

86.9 KB Created: 2021-05-31 21:50:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 34bb7dd6c43728a79d86a82e9e0786a0 SHA-1: 9d32cc6e413013ceebdaa7c4c972d3780473070a SHA-256: f001b5dc8a75fab2cbbfb97224d4616720d99633dc10c9a73a27f752aaf26c03
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9991

Heuristics 5

  • 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 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://irlanc.ru/pbw?utm_term=como+jogar+dama+passo+a+passo PDF link annotation
    • https://rofupujo.weebly.com/uploads/1/3/4/3/134335987/7880199.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484835/normal_6010968e157e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477629/normal_60270871684bd.pdfIn PDF document text
    • https://vijekufimukij.weebly.com/uploads/1/3/0/9/130969895/cde58fc8.pdfIn PDF document text
    • https://fekanefitogi.weebly.com/uploads/1/3/4/3/134340372/pokib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379854/normal_6009de3a728e2.pdfIn PDF document text
    • https://vepemetamat.weebly.com/uploads/1/3/4/3/134354227/4846971.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474206/normal_60185c2044d72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369764/normal_5fe036f32e8bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420939/normal_6052fb94835f3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475854/normal_600396b82e8bc.pdfIn PDF document text
    • https://wanuwoziburake.weebly.com/uploads/1/3/4/4/134458428/5995264.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473656/normal_5ff1f401aa90a.pdfIn PDF document text
    • https://dafepigog.weebly.com/uploads/1/3/4/6/134605944/dijafolawafew-fuxobegavixokez-tebugo-fawesir.pdfIn PDF document text
    • https://sevexuwajewedov.weebly.com/uploads/1/3/4/5/134508994/611e77df3c2e82.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
    • http://lekuzax.pbworks.com/f/xanexokudegedivisel.pdfIn PDF document text
    • http://fevawigo.pbworks.com/f/sokofafusab.pdfIn PDF document text
    • http://lipadune.pbworks.com/f/opera_browser_64_bit_windows_10_download.pdfIn PDF document text
    • http://rugewenuzed.pbworks.com/f/pelolufofoxivaxuvoseten.pdfIn PDF document text
    • http://zezimin.pbworks.com/w/file/fetch/144422139/tableau_server_training_ppt.pdfIn PDF document text
    • http://gifavipa.pbworks.com/f/2015_vw_passat_repair_manual.pdfIn PDF document text
    • http://povelin.pbworks.com/w/file/fetch/144422994/56787617088.pdfIn PDF document text
    • http://gajufabeke.pbworks.com/w/file/fetch/144423030/51314251382.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10752 4784 bytes
SHA-256: 613ef31cf9a9b755e178f9dbae9383fbd66680bbc44b47e637c5508e353e5e11
font_01_sfnt_off0001178d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1178D 12980 bytes
SHA-256: cb1cb9819c81c014f133404254fb5f6fc3e9b6baafe780b262cfc5bd4e2bca6c
font_02_sfnt_off00013e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E59 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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