Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb112714dd788646…

MALICIOUS

PDF

72.1 KB Created: 2021-03-02 18:26:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 81392822b8aa8eea2e62d59d7cbac556 SHA-1: f6325f796d1d71d0154834ac856f2af449a23e35 SHA-256: bb112714dd78864685302925190a3be244dacff19cdfc3d13b5e9afc3d0e0db9
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=what+is+internal+reflux+in+distillation In PDF document text
    • http://gachihyper.xyz/8915817927atha6.pdfIn PDF document text
    • https://cdn.sqhk.co/xidatelo/bicgdx9/easter_bunny_food_popcorn.pdfIn PDF document text
    • https://cdn.sqhk.co/ravusigi/5b8gf6n/veneno_roadster_super_car_speed_drifters.pdfIn PDF document text
    • https://cdn.sqhk.co/buvaboda/jijhgiA/gavejitudupokejef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462339/normal_603a01d668ddb.pdfIn PDF document text
    • http://djami.ru/fanatical_football_mod_apkk8mmw.pdfIn PDF document text
    • https://cdn.sqhk.co/vumivatuvi/chjjcia/26572971072.pdfIn PDF document text
    • http://homiak.fun/66678274601ez871.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/fgiwxYT/jojo_siwa_live_to_dance_apk_mod.pdfIn PDF document text
    • http://prizinsta365.website/kreg_screw_length_guidedllpz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371790/normal_6014ea8c61979.pdfIn PDF document text
    • https://cdn.sqhk.co/dedizozife/jbjisqh/56443826167.pdfIn PDF document text
    • https://cdn.sqhk.co/letiludixo/geSjg0Z/20076490269.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476147/normal_6008e1ef64cb5.pdfIn PDF document text
    • http://xplaintome.ru/68377787731pal10.pdfIn PDF document text
    • http://maykistore.ru/pamumalikalimozigasatej8h0ak.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/kujapomib/bis_end_user_certificate_template.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_off0000de52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE52 5076 bytes
SHA-256: 32a86e2be1603adaab4bd88e83ad2f837483a9c9a76f1ba3f68920065c3f32e8
font_01_sfnt_off0000ef9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9F 10360 bytes
SHA-256: aa753e8a530faf51eb70b973861ddb701bf469a8b99ce3c4a4cf789a72ded6f8