Malicious PDF — malware analysis report

Static analysis result for SHA-256 345bddd33190acd1…

MALICIOUS

PDF

72.5 KB Created: 2021-02-12 04:18:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4f3ac06f638ac6bc3a55af2e2265d8d8 SHA-1: 282a1c0ffa7d4064d64f8e7c5acae0068b7a2dba SHA-256: 345bddd33190acd1e7f2ae3b45534752d54fe9bf4d582590269fbf67e0d30b7e
136 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
  • 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://seumenha.ru/wb?keyword=carpenters%20close%20to%20you%20piano%20sheet%20music PDF link annotation
    • https://cdn.sqhk.co/gijesali/jHij8L1/neo_geo_battle_coliseum_xbox_360_rgh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456114/normal_5ff528972e068.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481684/normal_600dd2d58c895.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374366/normal_5ff0d92f0a983.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408996/normal_601f99592665e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471230/normal_601ce675b3e73.pdfIn PDF document text
    • https://cdn.sqhk.co/jetirivotu/epij7ha/subway_surfers_unblocked_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375891/normal_5fdd9a2add059.pdfIn PDF document text
    • https://cdn.sqhk.co/kovutego/3Kjhajg/2020_national_farm_machinery_show_exhibitor_list.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484818/normal_6019f2b645eac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494166/normal_60247a223ab07.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/libeganot/1731269303.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/83559519852.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/3ds_max_grass_material_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/zuruk.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_off0000de4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4E 5180 bytes
SHA-256: d3ef606af8831f5d778aba220e0b40c4b3eb118e96805b926b8820524963e329
font_01_sfnt_off0000efc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC8 11036 bytes
SHA-256: 100fc67ef44dc66839ec05b194e44315a687a216a740c6c0137a8c80c9723eb3