Malicious PDF — malware analysis report

Static analysis result for SHA-256 4659cc384601b550…

MALICIOUS

PDF

74.4 KB Created: 2021-02-25 04:35:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: dafbfbef9949ee796b8d59474d9f5235 SHA-1: 831187ff322e5071fd651eaca48d76056e3776ab SHA-256: 4659cc384601b5503abf5697445c6261fe4dc505dd980aac92f7149cd08939b6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/award?keyword=impact+of+globalization+on+business+culture PDF link annotation
    • https://cdn.sqhk.co/dakizenewa/dieBPii/cossacks_3_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/sowodopevew/hdJegip/matemigaxu.pdfIn PDF document text
    • http://zubosoxi.22web.org/social_media_marketing_a_practitioner_guide.pdfIn PDF document text
    • http://canonsburglake.com/calculus_by_thomas_finney_free_download08p0g.pdfIn PDF document text
    • https://cdn.sqhk.co/balatexoriv/6jiNnjh/86043792691.pdfIn PDF document text
    • https://cdn.sqhk.co/wesebewoweva/jhihizT/tanogekekup.pdfIn PDF document text
    • https://cdn.sqhk.co/zukuxenopo/bhicO1a/34015116362.pdfIn PDF document text
    • https://lifinupal.weebly.com/uploads/1/3/5/3/135336288/mamadugotinivere.pdfIn PDF document text
    • http://xafupatudiki.22web.org/myanmar_arrival_visa_application_form.pdfIn PDF document text
    • https://pujuwofox.weebly.com/uploads/1/3/4/8/134882524/tifobukovuwure.pdfIn PDF document text
    • https://sawolopu.weebly.com/uploads/1/3/6/0/136049845/decd0228.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/1igZtAu/greatest_hits_of_the_80s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421039/normal_5fe79607c9c24.pdfIn PDF document text
    • https://cdn.sqhk.co/xarobumevux/YIILT7l/wozazawu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xetulugesoboko.epizy.com/dominoes_games_online_free.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_off0000e74e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE74E 5460 bytes
SHA-256: fdb43f6ecee11ea8b3831fc0a10b25c1e01f0118c325a41c9a71cd65e51e7672
font_01_sfnt_off0000f9d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D6 10160 bytes
SHA-256: 2945ca5af53c68f340bf232855a891072b4b15a18d2cce8dc1cf68030bf13467