Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d70f8de097727ed…

MALICIOUS

PDF

67.4 KB Created: 2021-03-18 00:30:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1df9d018d52f9071e59e73261a86b169 SHA-1: dfa0fb2fbd1091cea07697520d6cf3f9420e10cd SHA-256: 8d70f8de097727ed044edd990923f2dd7c12ebe6f9bc328afc487ee76b8b4f9a
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 0.9997

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://xezojetit.ru/123?utm_term=atheros+csi+tool+user+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460043/normal_5feb715d21370.pdfIn PDF document text
    • https://cdn.sqhk.co/perajomipe/hgdiaja/41362166608.pdfIn PDF document text
    • https://fuxilidunud.weebly.com/uploads/1/3/5/3/135314653/vodifixo.pdfIn PDF document text
    • http://garant-ritual.online/deepak_chopra_21_day_meditation_2020ng8cn.pdfIn PDF document text
    • http://haustova.com/74984755166yj4xf.pdfIn PDF document text
    • http://all-gopro.com/potutupikunegerude3b40y.pdfIn PDF document text
    • https://cdn.sqhk.co/bexexoro/QhaeOOy/xetifebe.pdfIn PDF document text
    • http://allwoman.site/72165977325z6b5b.pdfIn PDF document text
    • https://cdn.sqhk.co/roturoda/jifdpge/ruwotusope.pdfIn PDF document text
    • http://islta.fun/jepovesasugupuvala5sxwe.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/cjcifjb/6387279605.pdfIn PDF document text
    • https://vevatujiv.weebly.com/uploads/1/3/1/4/131482893/zemozunijuxemufuges.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385197/normal_601bb3b9c41d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464319/normal_5fded71e6092f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5b2b9875-3923-4577-9ef6-0527498c95e7.filesusr.com/ugd/4e6dd5_97bcc24aef7a4c96803e97d4b13ff98a.pdf?index=trueIn PDF document text
    • http://suduxegowur.onlinewebshop.net/what_can_be_programmed_with_python.pdfIn PDF document text
    • https://ac65beef-1c88-4b01-a948-251493ed82f2.filesusr.com/ugd/09857b_3fb10c467b5b491f9f7e2408c7b71bdb.pdf?index=trueIn PDF document text
    • https://ee6bc897-aa08-459d-b6e6-b1b1d69fcba1.filesusr.com/ugd/7ba596_8ae0c671fd044c1daa3a54c2d3d4e529.pdf?index=trueIn PDF document text
    • http://rivenoke.onlinewebshop.net/64311821009.pdfIn PDF document text
    • https://8084a2ae-6cfb-493d-8155-0d4219c0f7e3.filesusr.com/ugd/5b3528_bf5f2ec432a947bf91516c80b6e5207b.pdf?index=trueIn PDF document text
    • https://f499a9ea-5579-4d3c-a180-ba191067f9b7.filesusr.com/ugd/34ec99_6b30c5d4c1ee47c78c5d332397cb86f5.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_off0000cb0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB0C 4980 bytes
SHA-256: 21fcd57e0aa22ebad85b82aaadd029dd6770eac24d25c14d821a3bbd537aa3b8
font_01_sfnt_off0000dbf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF5 10240 bytes
SHA-256: 5476935f31bf45a77a15c32006d819ea9d384c8779fd9de17bb0add45af6ef2f

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