Malicious PDF — malware analysis report

Static analysis result for SHA-256 29bc112b5c76292c…

MALICIOUS

PDF

77.6 KB Created: 2021-02-18 19:34:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 11da3f6cdddaae4c0dce86d847dcb5fb SHA-1: 182523d4828fd9c62e4361bd0895610a230b24ed SHA-256: 29bc112b5c76292c3e36a8f5d7562242e1340cbef15b766788068d4764f937be
126 Risk Score

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 0.9998

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://crophysi.ru/strik?utm_term=the+art+of+r+programming PDF link annotation
    • http://vivoxasoro.22web.org/ewan_the_dream_sheep_user_guide.pdfIn PDF document text
    • https://lipemegovaw.weebly.com/uploads/1/3/4/7/134766771/898326b.pdfIn PDF document text
    • https://jinobodusere.weebly.com/uploads/1/3/4/7/134722577/giwena_jomikorunawaso_dimazejikirano.pdfIn PDF document text
    • https://cdn.sqhk.co/masunidupag/ihgXjjJ/missiles_and_fire_control.pdfIn PDF document text
    • http://cardioactiveufficiale.site/pathfinder_divine_anthologyqunxi.pdfIn PDF document text
    • https://segawalapuk.weebly.com/uploads/1/3/4/9/134902876/5a0b409.pdfIn PDF document text
    • http://wbigs.space/principles_of_management_book_university_of_minnesotao7u91.pdfIn PDF document text
    • http://kushtanash.ru/download_game_muddy_heights_2_pcev1ob.pdfIn PDF document text
    • http://emmetrix.net/92311359638fe2b9.pdfIn PDF document text
    • https://buvapubadoloj.weebly.com/uploads/1/3/4/2/134265521/774e623e2a9b840.pdfIn PDF document text
    • https://cdn.sqhk.co/muzorefu/gzsgdhj/27059181820.pdfIn PDF document text
    • https://cdn.sqhk.co/moxinivo/yjajdhi/54097029017.pdfIn PDF document text
    • https://xaxibilezulaf.weebly.com/uploads/1/3/4/0/134096047/2035817.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/iiUeicu/mumegeneju.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/sezebepit/sound_effects_free_apk.pdfIn PDF document text
    • http://befakugidutoj.rf.gd/solving_multiple_step_equations_with_fractions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/96439328309.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/instagram_highlight_er_online.pdfIn PDF document text
    • http://ruriwujuvuwa.epizy.com/kafimise.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE613 4840 bytes
SHA-256: 6e3a0a75c967e4ee32bbdccc43defca3c7096185190437fa7fd66e563b080c2c
font_01_sfnt_off0000f665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF665 10592 bytes
SHA-256: 5556dfa3cb3ed47d22d89bfbe6ce33ecca6831c487f8cae2a47858a2511e4c62
font_02_sfnt_off00011ac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AC9 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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