Malicious PDF — malware analysis report

Static analysis result for SHA-256 c198d67342d2e4b3…

MALICIOUS

PDF

73.3 KB Created: 2021-02-24 21:55:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2921fa06c9e6889f2659c866535614b5 SHA-1: 7f3980470ea384d038bd9d6c42773641393617fe SHA-256: c198d67342d2e4b3954e237fda862bf266338108156b88a97d471376210c2276
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://baarspo.ru/wix?keyword=stanford+law+final+exam+schedule PDF link annotation
    • http://remontvorot24.com/2002_vw_passat_owners_manual4rr7o.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/fukixaxu.pdfIn PDF document text
    • http://antonioit.space/widoxiyno5.pdfIn PDF document text
    • http://tactical-jacket-sale.shop/how_to_clean_vicks_warm_steam_vaporizer_without_vinegar27yjt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444366/normal_5ff8018f278f6.pdfIn PDF document text
    • http://zonizubiro.getenjoyment.net/16700370610.pdfIn PDF document text
    • https://cdn.sqhk.co/nufesewepi/jh1gfji/horizon_camera_controls_unavailable.pdfIn PDF document text
    • https://cdn.sqhk.co/rowojazur/b3miaif/tiktok_real_time_followers_kunno.pdfIn PDF document text
    • https://cdn.sqhk.co/zidulibu/dfjggcX/fuwir.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/idYjg7G/nasacort_coupon_code.pdfIn PDF document text
    • https://cdn.sqhk.co/sakiforivona/REAinbC/78026016345.pdfIn PDF document text
    • http://dorulezebum.sportsontheweb.net/probability_and_statistics_textbook_slader.pdfIn PDF document text
    • https://cdn.sqhk.co/moturalogupe/8hgCvb9/wolepijazuvuge.pdfIn PDF document text
    • https://cdn.sqhk.co/dasewugiru/jbouAzU/29221758504.pdfIn PDF document text
    • https://cdn.sqhk.co/jenotonolo/gifiagd/granny_chapter_two_game_online.pdfIn PDF document text
    • http://oneitshop.pro/20500107059ycwae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wotidupodugi.myartsonline.com/figetuge.pdfIn PDF document text
    • http://liroporuki.myartsonline.com/2601861583.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_off0000e1da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DA 5524 bytes
SHA-256: f7fd1768565ebac000ccfab7634fac747af25768ee43ad4663a17dc1c793db8f
font_01_sfnt_off0000f493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF493 10508 bytes
SHA-256: a51d2d53fa89cbf40750b264ebdc8f62f24d9474ea59eaf279184e41294c90e6