Malicious PDF — malware analysis report

Static analysis result for SHA-256 54519d2e699aca24…

MALICIOUS

PDF

69.8 KB Created: 2021-03-12 03:01:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5305cd60cae0521c37670b537908062a SHA-1: 86bba46600a8296eac6a0ba6511db864ddb97f53 SHA-256: 54519d2e699aca24194b01e53eb228580d789b7f266456dcf6f9ada97169db94
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://golowaki.ru/wix?keyword=tubidy+apk+video PDF link annotation
    • https://fesinukovib.weebly.com/uploads/1/3/4/7/134715349/8401261.pdfIn PDF document text
    • https://jujoxiro.weebly.com/uploads/1/3/4/8/134875196/d6bdabc7.pdfIn PDF document text
    • https://xonasuxodu.weebly.com/uploads/1/3/2/6/132681295/pebelupipafepid.pdfIn PDF document text
    • https://cdn.sqhk.co/dedomafub/fAJLgc9/50599320278.pdfIn PDF document text
    • https://lolifibek.weebly.com/uploads/1/3/4/6/134634661/9825212.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407303/normal_6047c4fc96238.pdfIn PDF document text
    • https://monoxute.weebly.com/uploads/1/3/6/0/136051008/tosonujafuwesuro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366397/normal_602e6efb60fae.pdfIn PDF document text
    • https://cdn.sqhk.co/gusiloxi/hbnifje/import_vat_calculator_ireland.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456712/normal_5fee37f5d3309.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457005/normal_603b5d6d3bc0a.pdfIn PDF document text
    • https://cdn.sqhk.co/nugopanage/jAhgggC/tank_battle_normandy_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wepunajexiju/ggg81je/alchemy_coach_2.pdfIn PDF document text
    • https://xugugizebe.weebly.com/uploads/1/3/1/4/131482894/9802782.pdfIn PDF document text
    • https://cdn.sqhk.co/nojedajoze/GnggAhc/top_10_anime_comebacks.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459463/normal_602dcf2f485fd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ef4b221f-cfb4-47e8-bf1d-3b5092770df7.filesusr.com/ugd/4948da_4a2f015566a04f80bdcbed2da321aa28.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/30a8e226-0349-4303-8244-5e7fedb8111f/33438898413.pdfIn PDF document text
    • https://52e4ff08-8ecf-46b4-99c6-84b3c54d443d.filesusr.com/ugd/03ef8e_bd1c78a757634596aa20e1fc0380bd12.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1af23b73-000a-4f8f-90c8-65388d6ac7fd/27458728393.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48f7c764-d3f0-4190-b202-ec87e680ef27/how_to_charge_black_and_decker_18_volt_battery.pdfIn PDF document text
    • https://40e214c1-1950-44e8-a195-e2c6eeb23253.filesusr.com/ugd/a517f4_840cfda2c833492eaddab7c5aa4fe6d3.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D8 4960 bytes
SHA-256: 676de3bc10456656ba92778c71c029e8561afde1751f780b50bde72232e741e0
font_01_sfnt_off0000e7d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D9 10168 bytes
SHA-256: 41124ab59b1c931a357e72eccdc92ccaf42fb9dca5fd74e5b6e502450f51b175

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