Malicious PDF — malware analysis report

Static analysis result for SHA-256 67fa74f6b4e6cd4e…

MALICIOUS

PDF

77.3 KB Created: 2021-04-25 09:46:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: d707fe1145b950f1cec39229f49dace9 SHA-1: eea5a2543ea5fbe0a4c467b92ea7a90765fee07a SHA-256: 67fa74f6b4e6cd4e97f4ba90c6a85aa5932785735528a52976b9036dcd60bb92
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. One of the embedded URLs, 'https://soxebez.ru/strik?utm_term=desde+el+jardin+cristian+warnken+youtube', is likely part of the lure. The document's structure and the presence of numerous external links indicate an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/strik?utm_term=desde+el+jardin+cristian+warnken+youtube PDF link annotation
    • https://lawamikakemudi.weebly.com/uploads/1/3/4/4/134477295/2096909.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/aAcjaQN/mobile_tickets_apple_wallet.pdfIn PDF document text
    • https://cdn.sqhk.co/nepelusir/jjNJhci/monster_truck_destruction_game_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/kufejeni/jijJYha/lopaxumuw.pdfIn PDF document text
    • https://nibasekugi.weebly.com/uploads/1/3/1/0/131070633/vagegepodi.pdfIn PDF document text
    • https://cdn.sqhk.co/mivoteloxip/bMjhggh/assassin_s_creed_apk_obb_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/dosojegomugu/7jfifhe/tokezaj.pdfIn PDF document text
    • https://cdn.sqhk.co/xurokagozagu/7m4ie2f/4637737044.pdfIn PDF document text
    • http://mizigigutafax.iblogger.org/refisejep.pdfIn PDF document text
    • https://dikemogegopur.weebly.com/uploads/1/3/1/4/131406608/5603823.pdfIn PDF document text
    • http://vexamukuzudeb.iblogger.org/kumon_simple_addition.pdfIn PDF document text
    • https://cdn.sqhk.co/denobafopum/haoifhc/rezixixizefinowopepusaru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rawowixit.epizy.com/62219985463.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/luloxavoxemewab.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/18287392485.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/what_are_the_mechanical_properties_of_polymers.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/hotel_company_profile_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/vevilirulimapip.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/bikram_singha_full_movie_in_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/harry_potter_2_cast_nurse.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/bovopafege.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED94 5404 bytes
SHA-256: 689be466dfe72773633d30b9543f7d8e4a240dcd16ae1b8ac8688d422f494cd0
font_01_sfnt_off00010025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10025 11800 bytes
SHA-256: 32f020e8d8fa49fb08228fafdb04eff348cf425eea96d7c577472cc1b746bb83

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