Malicious PDF — malware analysis report

Static analysis result for SHA-256 69bf631006a48daf…

MALICIOUS

PDF

70.9 KB Created: 2021-01-19 01:39:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d4790bed7e429a9f759772fe2021315 SHA-1: d33312a95a26eade2c47a07152d4e939d775f16b SHA-256: 69bf631006a48daf3f7adc9a4066030b1f8d86e35e8d31cef71d72c85c0987c3
66 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically pointing to 'traffking.ru' and using a 'utm_term' parameter suggesting a phishing or redirection campaign. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is designed to host numerous links on disposable hosting, further supporting a malicious intent. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious content or behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://traffking.ru/123?utm_term=interspousal+transfer+deed+california
    • https://cdn-cms.f-static.net/uploads/4384655/normal_5f8ea324472f2.pdf
    • https://cdn.sqhk.co/nafumozuwe/ggfc1fR/lenovo_chromebook_charger.pdf
    • https://cdn.sqhk.co/bowawugafux/eKGgghf/kingdom_strike_heroes_mod_apk_unlimited_gems.pdf
    • https://beretukajawedu.weebly.com/uploads/1/3/4/7/134713042/9eafe41d.pdf
    • https://cdn.sqhk.co/bopesajan/jfdjbjj/74721590088.pdf
    • https://cdn.sqhk.co/bodovukig/Fhfjchb/funny_hunting_wife_memes.pdf
    • https://dadixuva.weebly.com/uploads/1/3/4/0/134018012/mugagidebap-zitodijekonif.pdf
    • https://xurizuful.weebly.com/uploads/1/3/4/8/134898541/dixosuwukoguzu.pdf
    • http://mitidogifomasis.iblogger.org/datesifiwonemabiwop.pdf
    • http://xuxelenoxuze.iblogger.org/ccleaner_pro_apk_cracked_2019.pdf
    • https://cdn-cms.f-static.net/uploads/4495392/normal_5fb4777f6f8dd.pdf
    • https://static.s123-cdn-static.com/uploads/4444874/normal_5fff6d2bbdb7d.pdf
    • https://cdn-cms.f-static.net/uploads/4371020/normal_5f8f19a152c30.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/remeranexe/76745595049.pdf
    • https://s3.amazonaws.com/lomogas/reporter_young_warszawa_sklepy.pdf
    • http://zufonokimilije.epizy.com/mphasis_pune_aptitude_questions_and_answers.pdf
    • https://s3.amazonaws.com/vuxalirudidel/solution_of_integral_calculus_by_das_and_mukherjee.pdf
    • https://s3.amazonaws.com/rejiner/report_lost_emirates_id_card.pdf
    • http://zomimek.epizy.com/acknowledgement_thesis_apa_format.pdf
    • https://s3.amazonaws.com/jamokaroxoj/xogotagul.pdf
    • https://s3.amazonaws.com/gezizefefififa/60_day_notice_to_vacate_apartment_template.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9e1.bin
569c5431aa362655c1598d7386ece86c70b9f5b8163db307e1cda61b67ebfc2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E1 5088 bytes
font_01_sfnt_off0000eb3b.bin
781734386353629f7aadd86ad8a38970e5bcae46935dd05bc50537e0b749dff5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3B 10212 bytes

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