Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fa47cb486dd40cd…

MALICIOUS

PDF

72.3 KB Created: 2021-02-15 10:30:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f6dfdec1a3d38d49028366b58307c72c SHA-1: ad3a9478050613cccca2fafbce7cae3cf0b5002b SHA-256: 1fa47cb486dd40cd4159e04bdfccfec60e5838de4518ca25035a93e058674594
194 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
  • 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.
  • 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.
  • 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/aws?utm_term=hymn+piano+solo+sheet+music+free In PDF document text
    • https://static.s123-cdn-static.com/uploads/4503390/normal_5fed7534845b7.pdfIn PDF document text
    • http://magicwoolshop.com/benikasibafosewisaw3no.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387924/normal_5fde2fa7085b5.pdfIn PDF document text
    • https://cdn.sqhk.co/lixozimiz/3DhiO0W/define_handbook_synonym.pdfIn PDF document text
    • http://xawinagolagiju.iblogger.org/toyota_auris_2014_repair_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445558/normal_5fc6a76c1ddaf.pdfIn PDF document text
    • https://cdn.sqhk.co/wixumenez/jajfnhf/break_wall_game_for_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384470/normal_5fcf673db230f.pdfIn PDF document text
    • https://cdn.sqhk.co/moxibusas/bgdTAhw/99199992493.pdfIn PDF document text
    • https://cdn.sqhk.co/sanojuxako/I8SifaJ/best_fuel_consumption_pickup_truck_malaysia.pdfIn PDF document text
    • http://specrazreshenie.com/misalufofabadokyh9bv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bemerolafun.epizy.com/informed_consent_in_belmont_report.pdfIn PDF document text
    • http://forevar.rf.gd/innovation_funnel_template.pdfIn PDF document text
    • http://kanusilos.epizy.com/brche_und_dezimalzahlen_aufgaben.pdfIn PDF document text
    • http://kofukobekageja.epizy.com/xuxakodojipurekumaxore.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_off0000de9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9D 5320 bytes
SHA-256: 8c0b021ca4d59a417c68f3f4256b0038151accf5a75ed50d9a7efde6faaa80bd
font_01_sfnt_off0000f08d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08D 10640 bytes
SHA-256: bbe1a014ff6b312308210424187e0fba7731fee92dae8c43c48dd2bce27e1998