Malicious PDF — malware analysis report

Static analysis result for SHA-256 74bd9772ac6301dc…

MALICIOUS

PDF

69.3 KB Created: 2021-03-04 07:01:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6ac1f71f4bfd83927425cd81f2ee298b SHA-1: e96043dce7cb7f2bd95107f23389d3ce511bcccf SHA-256: 74bd9772ac6301dcf666b8a23d106e5b88ea44a88da88f9cc5d043bcc5cfc162
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://seumenha.ru/award?keyword=today%2527s+a+great+day+gif PDF link annotation
    • https://jelamiwigu.weebly.com/uploads/1/3/1/3/131382248/ef77d161952f.pdfIn PDF document text
    • http://ita-bio.space/95234237830lraxu.pdfIn PDF document text
    • https://kalepadakib.weebly.com/uploads/1/3/1/6/131637037/pikodubafami_tiwuniwasilosi_webowebuvevavut.pdfIn PDF document text
    • https://cdn.sqhk.co/tijinujul/bnGhikx/fopakezizuwafer.pdfIn PDF document text
    • https://cdn.sqhk.co/gixelotopa/OeC3jfu/jozezejefapodimubemiwod.pdfIn PDF document text
    • http://lajenasuwo.iblogger.org/42983526861.pdfIn PDF document text
    • https://cdn.sqhk.co/wejewenu/ggpEiee/defodolaxunanij.pdfIn PDF document text
    • http://big-ita.space/how_to_draw_cute_things_step_by_step_for_beginnersi4war.pdfIn PDF document text
    • http://itdomen.fun/3800_series_2c63xg.pdfIn PDF document text
    • https://sugevemaketajes.weebly.com/uploads/1/3/4/8/134873201/f79bc48727d9ab.pdfIn PDF document text
    • http://workbykoder.xyz/421057541196lkyo.pdfIn PDF document text
    • http://katermore.ru/97317615649cqnyo.pdfIn PDF document text
    • https://veguxalefimas.weebly.com/uploads/1/3/1/3/131382166/lexomotadefusizazaju.pdfIn PDF document text
    • https://cdn.sqhk.co/gunonutib/Sgjgegh/where_to_get_boba_tea_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/pugepavofu/ehbMbii/choices_stories_you_play_pc_online.pdfIn PDF document text
    • http://klyshsheff.xyz/11027423401hvt4k.pdfIn PDF document text
    • http://momentikshop.space/196745314546nkwi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c80c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC80C 4808 bytes
SHA-256: dcc7e32752be1a748dd0f8d7897dfff6bdf3872d60a8852a480769081bf253aa
font_01_sfnt_off0000d890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD890 9788 bytes
SHA-256: a8d9d274f5dfc5a330cf75e0cf44ca478a30b55d98ca5405002357466794f5c3
font_02_sfnt_off0000fa0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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