Malicious PDF — malware analysis report

Static analysis result for SHA-256 05328370fd2df311…

MALICIOUS

PDF

77.6 KB Created: 2021-03-16 18:48:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 46400b26945afed5d56bef6faabd3291 SHA-1: 122b2dac31683030f0fe94ae05c2ff4e05bd7d9f SHA-256: 05328370fd2df311959087900d7c6fa6f01390113d5bec89023f0d51d9b99d63
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 0.9997

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://resalured.ru/123?utm_term=ryzen+7+2700x+build+guide PDF link annotation
    • http://sorakazuvopez.iblogger.org/lean_manufacturing_principles_examples.pdfIn PDF document text
    • http://lerob.info/how_to_improve_data_skillssc3ty.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/J9wUMgj/wallpaper_black_shark_hd_android.pdfIn PDF document text
    • http://usacreditreport.info/how_to_evaluate_performance_of_mutual_funds_in_indiazcr1b.pdfIn PDF document text
    • https://rixafewokeget.weebly.com/uploads/1/3/0/7/130739987/a524a1008a775.pdfIn PDF document text
    • https://gumevuwogixuxuj.weebly.com/uploads/1/3/5/3/135317748/6fb41aa5be59.pdfIn PDF document text
    • https://cdn.sqhk.co/zofukumane/T5Ziglj/better_word_for_master_of_ceremonies.pdfIn PDF document text
    • https://tavifarexup.weebly.com/uploads/1/3/4/6/134611028/8b19625c8.pdfIn PDF document text
    • http://alesyasemiletova.com/mijonamizujoviritujupopj1mw3.pdfIn PDF document text
    • http://kismykeitio.best/10317718358yccht.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/VkFgdie/rollercoaster_tycoon_4_mobile_unlimited_money.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dojajenubiti.epizy.com/30261134775.pdfIn PDF document text
    • https://be1b941d-c88c-475c-9260-a39c9d088d9d.filesusr.com/ugd/5c562d_f72276b0178a447882b4540d5dafe81d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/floral_vector_design_templates.pdfIn PDF document text
    • http://dewiwunitut.epizy.com/miniature_long_haired_dachshund_for_sale_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/97565376893.pdfIn PDF document text
    • https://438c9214-13ba-44a2-8469-a4c97ff43377.filesusr.com/ugd/5d46a0_6d65dc32ea4647c0a59b4341da27ff79.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pazatuv/jusavirafilozakak.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/summary_of_a_confederacy_of_dunces.pdfIn PDF document text
    • http://wawutanow.epizy.com/77793307331.pdfIn PDF document text
    • https://6c8027e1-9878-41b3-a9ef-32ba2b6bcd02.filesusr.com/ugd/185811_1c74320b3ab6437387b00ea7ddd0ff74.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BD 5232 bytes
SHA-256: f5c694517d1fd9fa52b2e77576dab66dc75861b0270f54a55b7ba570d2984b49
font_01_sfnt_off000102c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102C0 11352 bytes
SHA-256: c1b3e1d0d15aac927dd5ecf2d99e7dadcb9cd729dbcb62a767e58229426b8da4

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