Malicious PDF — malware analysis report

Static analysis result for SHA-256 2be50491a6c50cf9…

MALICIOUS

PDF

68.2 KB Created: 2021-03-20 21:39:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d3dfb844e107d07be22ef25bf4402bfb SHA-1: c1047c797bb28bc3b20928383e06db5b19e20ba6 SHA-256: 2be50491a6c50cf963f59d77d2c8772f78219d06191b3905d35b15a30befc1a0
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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://druttle.ru/aws?utm_term=what+instrument+is+used+for+measuring+blood+pressure PDF link annotation
    • http://davebamonuzove.medianewsonline.com/vizimewusidij.pdfIn PDF document text
    • https://luxabilep.weebly.com/uploads/1/3/0/8/130873941/gezesufaz.pdfIn PDF document text
    • http://winoxolupuvil.getenjoyment.net/harry_potter_movie_5_runtime.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373304/normal_5ff2d8f5862f0.pdfIn PDF document text
    • https://nidetufuw.weebly.com/uploads/1/3/6/0/136097009/bitogakixuf-nusiporigenurim-jejom-bonoza.pdfIn PDF document text
    • http://foxiduwanati.mygamesonline.org/murray_46_inch_deck_belt_diagram.pdfIn PDF document text
    • http://lixebafevoku.mypressonline.com/xufalirejuxisexubatidosat.pdfIn PDF document text
    • http://mon-compte-cmb.best/como_puedo_convertir_mililitros_a_gramosh7h9s.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/74529004895.pdfIn PDF document text
    • http://republvinb.fun/dopewigerelolw9i25.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381297/normal_5fcca009aea12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376103/normal_60342b6f8358e.pdfIn PDF document text
    • http://vevaxogejaz.scienceontheweb.net/rovogipulivuwujar.pdfIn PDF document text
    • http://lukufogud.getenjoyment.net/fumekamedisidu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369772/normal_5fe2ac930c800.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e7e2dc9-281b-401a-b20b-a4201ed3e4a0/2012_hyundai_sonata_hybrid_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1990d17d-3673-4617-9e62-2e050aa8e17b/price_weber_spirit_e_310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4523e3d8-a52c-4585-9ab9-84b1f815e923/what_happens_if_you_get_3_felonies_in_texas.pdfIn PDF document text
    • http://zesafemumibow.myartsonline.com/towudifawamaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe876ef9-be1b-4068-88ba-eead41b9f2d6/can_the_body_repair_itself_after_smoking.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_off0000cf8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8A 5608 bytes
SHA-256: 0cf200b2979d3a086a2655b51b6b8278d49a57efc713c0c0d930aedbc16eb9e2
font_01_sfnt_off0000e27b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE27B 9424 bytes
SHA-256: f6fad718f06cf682f9f20951e7289d1d0406c32ebca70e4c002e27b486680150

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