Malicious PDF — malware analysis report

Static analysis result for SHA-256 c94f98ed68b5dece…

MALICIOUS

PDF

65.8 KB Created: 2021-03-02 21:18:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 653b874749eeeb616b686665d7e19df9 SHA-1: 405f665e3f24cf6e83e440db8d65b6bc8d91ab01 SHA-256: c94f98ed68b5decedc316bd58daebc2d83e1135a3d135129d21464e4113b89b1
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=2005+chevy+cavalier+repair+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/sexifirume/ii33xhj/14194850734.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414678/normal_5feb47de38fcb.pdfIn PDF document text
    • https://zeleveruki.weebly.com/uploads/1/3/4/8/134898901/nexikexafew.pdfIn PDF document text
    • https://cdn.sqhk.co/pevedapev/gc7Uzhf/find_dunkaroos_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462726/normal_603d8f0e8232a.pdfIn PDF document text
    • https://cdn.sqhk.co/lexelinowe/jhhhQhh/orange_tree_strain.pdfIn PDF document text
    • http://sysfix.ru/dunkin_donuts_egg_and_cheese_wake_up_wrap_carbszvyz5.pdfIn PDF document text
    • http://13millions.store/varumaxekomupidusixddxcs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427528/normal_5ffde50b0f475.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/sefabe/fur_elise_piano_sheet_music_with_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/highway_racer_araba_yar_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/furby_connect_app_store.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/17429383097.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/acute_pancreatitis_acg_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/hiv_and_aids_information.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/47340360066.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/get_your_guide_reviews_milan.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/earth_science_textbook_9th_grade_answers.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_off0000c58b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC58B 5680 bytes
SHA-256: 677d1a96675de6e46ac80991a5ae672ff5fd26357441d82794fe5626fcf73a4a
font_01_sfnt_off0000d8c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C9 9820 bytes
SHA-256: 4a0373fa9d3cc147b9a6c2669ac2ab6192572f6bfb84d81c5566ec9d012330bd