Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4b84315253d2224…

MALICIOUS

PDF

74.5 KB Created: 2021-02-12 10:21:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 32ebf7f70fef889d87ac941026ba62e0 SHA-1: 869427bfde53880894d88d919f7fcf0349aaa86a SHA-256: c4b84315253d2224bfdc3e297fd121a88b39a6917a2bfa7a712ebf5d8486a2c3
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://baarspo.ru/wix?keyword=jackie+robinson+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/wusakituzu/jf04igu/red_ball_turning.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/jbjdpyK/35183324229.pdfIn PDF document text
    • https://cdn.sqhk.co/zebimapajod/wVDajia/icse_class_9_physics_question_paper_2020.pdfIn PDF document text
    • https://paxuxitusokewu.weebly.com/uploads/1/3/1/3/131380341/8118ad6.pdfIn PDF document text
    • https://cdn.sqhk.co/tovozovuzedu/YMSiijd/jokapezasinino.pdfIn PDF document text
    • https://cdn.sqhk.co/vosiwuli/Rjirowr/14278494519.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/Gjjq8Of/roref.pdfIn PDF document text
    • https://cdn.sqhk.co/tepobugu/jeghqph/weekends_only_jobs_near_me.pdfIn PDF document text
    • https://kazusabetife.weebly.com/uploads/1/3/5/3/135318045/4027151.pdfIn PDF document text
    • https://cdn.sqhk.co/tewokozogop/8jbRnkT/38308166220.pdfIn PDF document text
    • https://kaxawoxo.weebly.com/uploads/1/3/1/0/131070710/7683184.pdfIn PDF document text
    • https://cdn.sqhk.co/papusabefo/f7hgHdH/snake_worm_zone_big_worm_io_2020_mod.pdfIn PDF document text
    • https://dokerawu.weebly.com/uploads/1/3/4/3/134313580/006e7a604d.pdfIn PDF document text
    • https://kejazomunago.weebly.com/uploads/1/3/0/7/130776678/2aa410166f2d80.pdfIn PDF document text
    • https://wafiludelo.weebly.com/uploads/1/3/1/4/131437380/8f3f352794072d4.pdfIn PDF document text
    • https://zikixitifo.weebly.com/uploads/1/3/4/8/134897390/3909e9952f13.pdfIn PDF document text
    • https://xijiruxexewige.weebly.com/uploads/1/3/4/7/134725886/8239885.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://damewanobojojo.rf.gd/filmora_outro_template_free.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e726.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE726 5140 bytes
SHA-256: bc942afefe2de1c67dca2c85a2717c8a85946ceedd8bf50990512ae919082d6e
font_01_sfnt_off0000f8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B2 10628 bytes
SHA-256: 025f4b2b5d298ce8e8042eb0cfe24cdde0c5bb18312582056229bfe59640f76b

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