Malicious PDF — malware analysis report

Static analysis result for SHA-256 a13edf5b8560d9a6…

MALICIOUS

PDF

72.6 KB Created: 2021-01-28 06:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 46ce84a0575ceaadb32e214270362fef SHA-1: eb259b194f7c24385181066c7c70cf2c8a2fd1f1 SHA-256: a13edf5b8560d9a6617524d1b1f2639d121cf978c31ec2704eba0ea4dd2b3ead
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jacksth.ru/123?utm_term=iowa+code+573.14 PDF link annotation
    • https://cdn.sqhk.co/gokovolasula/gdihQe6/hitting_golf_ball_with_fairway_wood.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwoxebu/2Ljf9om/93689036367.pdfIn PDF document text
    • https://cdn.sqhk.co/sadirorig/MXyRgfM/87074910579.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406223/normal_6005a392ec995.pdfIn PDF document text
    • http://alcexpress1.xyz/sudavoxuk379j.pdfIn PDF document text
    • http://triple-doska3.club/epson_error_0x9a_repair_toolkop0a.pdfIn PDF document text
    • https://cdn.sqhk.co/zumufapofow/e6kiihz/zepur.pdfIn PDF document text
    • https://cdn.sqhk.co/vufisolepu/7jjijjx/66319446744.pdfIn PDF document text
    • https://bosonelete.weebly.com/uploads/1/3/0/8/130873804/f7bae513cf1d39.pdfIn PDF document text
    • https://cdn.sqhk.co/zodenizekija/ibgjfLk/nail_art_tools_kit.pdfIn PDF document text
    • http://gufutaca1.xyz/pinball_game_music_video_waploadedvqhyi.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/ihhgjgp/mini_motor_racing_mod_apk_data.pdfIn PDF document text
    • http://itanah.space/43084405263wp1go.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zakunafu/menajijawu.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/ramuperilusagapa.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_off0000e14b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE14B 5196 bytes
SHA-256: 7b459fc69944caaeb3a34ab968125a00e59d9203bdde562dbc9eea9eb0351486
font_01_sfnt_off0000f33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33A 10192 bytes
SHA-256: 95d80428c1bc2eeb6c4e5ee5535649af4fec596e1d4cf0ab6c9314b8389661b4