Malicious PDF — malware analysis report

Static analysis result for SHA-256 6690c23d13a2d0a3…

MALICIOUS

PDF

71.0 KB Created: 2021-02-06 01:29:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 74e09fbc9837d77f4e7e7244093b5510 SHA-1: 11482426186a03eae61858587b169be93310b88d SHA-256: 6690c23d13a2d0a33ff678074edeadd671f694b47e2ebf3238e9bd36ba2c1097
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://maypoin.ru/wb?keyword=mens%20hair%20style%20images PDF link annotation
    • https://cdn.sqhk.co/nolagutotato/ggjhbjg/20397748072.pdfIn PDF document text
    • https://cdn.sqhk.co/panafilaputu/gcJiehj/virtual_blackboard_app.pdfIn PDF document text
    • https://cdn.sqhk.co/gabazumad/1PXOAlQ/magic_fluids_lite.pdfIn PDF document text
    • https://cdn.sqhk.co/xaripisi/iiGjhjd/lorefokiverodako.pdfIn PDF document text
    • https://cdn.sqhk.co/zanuvajebodu/iehxnWh/truck_simulator_usa_money_cheat.pdfIn PDF document text
    • https://cdn.sqhk.co/ripalufix/hfwDgc0/kinifu.pdfIn PDF document text
    • https://cdn.sqhk.co/favejofu/jh7ichb/car_battery_starter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453563/normal_5fd2ec93ef615.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369191/normal_5ffcb0f6c2a85.pdfIn PDF document text
    • https://cdn.sqhk.co/xefilelo/genic03/76735532211.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382186/normal_5fde0191d5c04.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/efYhahc/56696822884.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/wetevali/nemivolanifegodizenazopa.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/33291251106.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/miwineriwigerepivo.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_off0000d993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD993 5208 bytes
SHA-256: 1b915a0111bff005cb6515bff8dde698ee4bba91ac01f3967aeb6baf651d5548
font_01_sfnt_off0000eb34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB34 10660 bytes
SHA-256: dd97361839429b698c730ad6eb0a58345000b906cb6f101f94f466bc10d6f4a8