Malicious PDF — malware analysis report

Static analysis result for SHA-256 8be2232635465aa2…

MALICIOUS

PDF

69.2 KB Created: 2021-03-17 11:18:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 591545625f88baa77a409c9046238fe1 SHA-1: 4e4283c852e6309a8a79c9f4f187fcc7a3d47ab5 SHA-256: 8be2232635465aa2b0932c357daf428a01aab2bac02d3dbf999b40ea9e29e20c
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple external URIs and is flagged as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway scanning. While no scripts were explicitly extracted, the presence of external links and the overall structure point towards a malicious intent to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://jumiwimov.ru/123?utm_term=the+standard+oil+octopus+answer+key PDF link annotation
    • https://jedunifoxawixe.weebly.com/uploads/1/3/4/4/134458330/wogijoziwibosis-limorad-bifutunafijipa.pdfIn PDF document text
    • https://cdn.sqhk.co/tifapoxur/V2jdAhf/best_90s_country_music_videos.pdfIn PDF document text
    • https://xudinenudomojuv.weebly.com/uploads/1/3/4/3/134356320/2408077b1a1e.pdfIn PDF document text
    • https://vubumemor.weebly.com/uploads/1/3/4/0/134012760/wogazetu-tuzadol-powosavitusuzi-tejafepezixere.pdfIn PDF document text
    • https://fidojosamesevuf.weebly.com/uploads/1/3/4/5/134594598/288098881.pdfIn PDF document text
    • https://wuxinaruniluxod.weebly.com/uploads/1/3/4/8/134882591/b65f40e24b5.pdfIn PDF document text
    • https://bagirarivevi.weebly.com/uploads/1/3/1/3/131384609/zupiv.pdfIn PDF document text
    • https://cdn.sqhk.co/nozedimasav/hhbyIhf/best_online_video_call_with_strangers.pdfIn PDF document text
    • https://jetireduru.weebly.com/uploads/1/3/1/4/131453335/tanenilojuzun.pdfIn PDF document text
    • https://cdn.sqhk.co/mofisozulud/RtWgdjg/kikabeminasubima.pdfIn PDF document text
    • https://sudarotabodubig.weebly.com/uploads/1/3/1/4/131407445/bcf462c174bd042.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/iQQfheV/wodila.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/tosevud/60511019726.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0db08a01-e3f8-401f-83fb-17f7d5f83811/how_do_ford_auto_locking_hubs_work.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/16945148233.pdfIn PDF document text
    • https://s3.amazonaws.com/tafogusegabomu/66600899067.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/worship_house_ngiyamazi_ujesu_mp4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4575c518-7919-43de-8125-165671b03dac/52566999758.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/46557274960.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_off0000c588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC588 5252 bytes
SHA-256: 3f1ebbce9b426c82962e3059b67f4d3c4f6d1dda0be8af3cb1c3c459a0b4d06c
font_01_sfnt_off0000d75f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD75F 9928 bytes
SHA-256: 6ebf737cfb10111759351f96eaa6e4abbd014515691b981ac969a6257b8bcf6f
font_02_sfnt_off0000f94b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94B 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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