Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00d7c227a12dd61…

MALICIOUS

PDF

91.2 KB Created: 2021-04-10 18:20:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f5bbd04ba598f62a6a2831736fdd1fd0 SHA-1: 11fb7c7873fc79f62bc055074d0e0a228d119bad SHA-256: d00d7c227a12dd6181b6bdb6aff22b1c1672d1e06324be5541ba4442a4c06a7e
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 0.9994

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://baarspo.ru/strik?utm_term=how+to+format+sd+card+for+moultrie+game+camera PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476445/normal_60410f54cee1d.pdfIn PDF document text
    • https://wejobufobugof.weebly.com/uploads/1/3/5/3/135348322/pasirejo.pdfIn PDF document text
    • https://nasaxedinevizuv.weebly.com/uploads/1/3/4/7/134759800/909610.pdfIn PDF document text
    • https://cdn.sqhk.co/vejuwipem/hhgdPSQ/datinimulubonezapukuze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374360/normal_5fe44ea72ab26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375521/normal_6047c2060964d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450151/normal_60571f991958a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470553/normal_5ff00f2865e08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368752/normal_5fd7b38e99820.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450046/normal_606e51ed2b0bd.pdfIn PDF document text
    • https://cdn.sqhk.co/vefuwatak/jcSUgde/bubble_poker_strategy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488806/normal_6004f1e6df28c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476272/normal_6032583ceca41.pdfIn PDF document text
    • https://jezaborerokifev.weebly.com/uploads/1/3/4/3/134392790/6438706.pdfIn PDF document text
    • https://cdn.sqhk.co/susojareb/djfieaf/sloth_from_ice_age_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/daxozazon/g5biW0H/vande_mataram_song_free_320kbps.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://robeguf.epizy.com/facebook_lite_search.pdfIn PDF document text
    • http://betitunusepa.epizy.com/3710162288.pdfIn PDF document text
    • https://61069a5e-3c5f-4884-a3c7-8c7552058b74.filesusr.com/ugd/0789d5_645e1584cc19472da640335b63c48395.pdf?index=trueIn PDF document text
    • http://pofitareku.rf.gd/rirajuku.pdfIn PDF document text
    • https://ab737b70-891a-4a1f-8db9-ee548211cb31.filesusr.com/ugd/ce14f3_3d11c38485f74132bda866f6f3a50906.pdf?index=trueIn PDF document text
    • https://ac685e6e-6442-44c0-91a1-b3a367e79ef2.filesusr.com/ugd/ce77c6_3496862b99804b589dad461e15cf0281.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000118c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118C5 5172 bytes
SHA-256: bb9e077ccc225950ed4f28f784bf16713840f2a6a12878955e4cc58af615ba1e
font_01_sfnt_off00012a64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A64 11200 bytes
SHA-256: 33f4b78430c09149594e13e5e3e58642cee753834471a9919cf03f1a7848729a
font_02_sfnt_off00015079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15079 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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