Malicious PDF — malware analysis report

Static analysis result for SHA-256 b856c3d09768d9fe…

MALICIOUS

PDF

66.0 KB Created: 2021-03-03 02:14:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6c9c7aaf6a2d187e5578d06053c47b86 SHA-1: b256416517c070292b5951a1bfb1e9aa09ecad0d SHA-256: b856c3d09768d9fe708ef1a8dad5fce416f02ff282a089200d8843433673ff3a
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://soxebez.ru/wix?keyword=exponential+growth+worksheet+tes PDF link annotation
    • https://cdn.sqhk.co/nowovadizeb/ahdhdQy/hand_drill_fire_kit_for_sale.pdfIn PDF document text
    • https://dosabaret.weebly.com/uploads/1/3/4/8/134861273/6300200.pdfIn PDF document text
    • https://vejevidumuruje.weebly.com/uploads/1/3/5/3/135302175/74b4f2be.pdfIn PDF document text
    • https://cdn.sqhk.co/gukisafuw/VjbMjcw/horizon_vs_monster_hunter_world.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/GiibAJl/97387294691.pdfIn PDF document text
    • https://cdn.sqhk.co/sotatixorawi/gnjjSgg/werewolf_game_cards_roles.pdfIn PDF document text
    • https://cdn.sqhk.co/xakurusuk/K5gjrha/the_short_life_of_bree_tanner_online_book.pdfIn PDF document text
    • https://divetuguwopad.weebly.com/uploads/1/3/0/7/130739619/josukaka.pdfIn PDF document text
    • https://cdn.sqhk.co/karadirimose/jse8tv2/ac_dc_guns_for_hire_youtube.pdfIn PDF document text
    • https://bevikutemo.weebly.com/uploads/1/3/4/6/134648684/1970875.pdfIn PDF document text
    • https://zizojatemizowen.weebly.com/uploads/1/3/4/0/134016780/didusojulebe-kamutezimulive.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/bisazabe/34700464472.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/48258855469.pdfIn PDF document text
    • http://kawerulim.onlinewebshop.net/how_to_get_soundbar_to_work_with_tv_volume.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/vabubutuju.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/94393603031.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/nofegusekikisafizesojago.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_off0000c78c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC78C 5264 bytes
SHA-256: cb2f98a6eff882b4fb9313c5cb70ef6bfbaab943ac63775cba0b5c6c72c9fdb1
font_01_sfnt_off0000d981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD981 9840 bytes
SHA-256: 9cdcee782901b683489916690f20bb53d388260db59dc95849d6799fced3814b

Open this report in the interactive analyzer, or submit your own file for analysis.