Malicious PDF — malware analysis report

Static analysis result for SHA-256 53df7adc9359e71f…

MALICIOUS

PDF

63.2 KB Created: 2021-02-11 04:08:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f470e4d007fa714b854ea77cb1cfa031 SHA-1: c1ac1acd7259bf89df43e433c80caf39d3a181ac SHA-256: 53df7adc9359e71f246d32edcddd4cf94e4406e230964a373cdf8474266f9f28
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://druttle.ru/123?utm_term=edwards+cinema+long+beach+times PDF link annotation
    • https://zenamuvevabun.weebly.com/uploads/1/3/1/4/131453902/7431822.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481409/normal_5fe6430a6adec.pdfIn PDF document text
    • http://nejozewowedona.22web.org/email_template_generator_free.pdfIn PDF document text
    • https://pevaluxuduta.weebly.com/uploads/1/3/4/5/134502983/5402755.pdfIn PDF document text
    • https://jigurojo.weebly.com/uploads/1/3/5/3/135321607/2921197.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/iaVGihz/monster_battle_games_online_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494661/normal_601574e8e7274.pdfIn PDF document text
    • https://poxixarusel.weebly.com/uploads/1/3/4/1/134131789/zosix_nufezaterawo.pdfIn PDF document text
    • https://vinofuloro.weebly.com/uploads/1/3/4/8/134850824/tepetofogef-rofozi-panum-kesopizazewi.pdfIn PDF document text
    • https://goladamopalej.weebly.com/uploads/1/3/1/3/131397974/3130689.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494669/normal_602466ae5dcd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426416/normal_601105892f8ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414339/normal_601469deac9b4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kurejaj.epizy.com/accountant_termination_letter_template.pdfIn PDF document text
    • http://zewixezix.epizy.com/sirius_starmate_8_user_guide.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_off0000bae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAE1 5540 bytes
SHA-256: 5e24563d4edef62a69f2ed648be942c6863a43d636605a9437a73e34a32e1190
font_01_sfnt_off0000cda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA0 10168 bytes
SHA-256: 60158e438e0f30362bea92f1b1ec9a39d1f63db2c3d018c7616289dbd4c0978d