Malicious PDF — malware analysis report

Static analysis result for SHA-256 953ea8a8ef382e1c…

MALICIOUS

PDF

70.6 KB Created: 2021-02-21 13:41:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bc0e88685b37718bbf5da78063e56ef4 SHA-1: ae0f9b77fc004431ec8432112e1c40f351d5427e SHA-256: 953ea8a8ef382e1cd120f90c37b25540ae90a8f5a69f647e5e716741cb11c94c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=nikon+n6006+battery PDF link annotation
    • https://cdn.sqhk.co/ligilitojob/dpjPUgd/rotator_cuff_tendinopathy_recovery_time.pdfIn PDF document text
    • https://cdn.sqhk.co/pibutuvopedu/mRXQBia/52160628484.pdfIn PDF document text
    • https://cdn.sqhk.co/jovakuki/gfnsYih/vadobuvoj.pdfIn PDF document text
    • https://cdn.sqhk.co/xeposetuge/fghxNwk/kigavupoburijap.pdfIn PDF document text
    • https://cdn.sqhk.co/lomasamube/zqgejad/stylish_fonts_app_download_uptodown.pdfIn PDF document text
    • https://fotelosalif.weebly.com/uploads/1/3/4/4/134463398/8522142.pdfIn PDF document text
    • https://lafotasenobofow.weebly.com/uploads/1/3/4/6/134675597/9377153.pdfIn PDF document text
    • http://dimusenomi.iblogger.org/71817446173.pdfIn PDF document text
    • https://cdn.sqhk.co/duloputemab/igeNDji/smith_pocket_knife_sharpener_review.pdfIn PDF document text
    • https://cdn.sqhk.co/wazikunal/cjcpijQ/18485694501.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/mipeboro/16544664923.pdfIn PDF document text
    • http://jogufek.epizy.com/burger_king_images.pdfIn PDF document text
    • http://jiwimid.epizy.com/barugitutaradi.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/josulamaniwiwaragikewab.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/icloud_drive_android_tablet.pdfIn PDF document text
    • http://wereguvepowu.epizy.com/jemeruni.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_off0000d8cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CC 5040 bytes
SHA-256: 5e99f689634cb932dc9b78532248fb7b72c5a47b0859d746728740acea910dc0
font_01_sfnt_off0000ea0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0D 10476 bytes
SHA-256: a5c3616d2ea451fe9f18dfd36b0a8badcb21116898907121caa3ff09fbaa1fd4