Malicious PDF — malware analysis report

Static analysis result for SHA-256 2416fa2f5384292c…

MALICIOUS

PDF

70.8 KB Created: 2021-02-28 21:57:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 84a39851cb14ad236a57bb33cc925480 SHA-1: 01bd485e7cb3b9008fea10ea5f88d08f00522a05 SHA-256: 2416fa2f5384292c002d84e0d6b1692d39fa03754b3cfb5ac8bddb0a972cb884
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/award?keyword=when+to+apply+for+scholarships+for+spring+2021 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4401714/normal_6007b08e8e116.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388272/normal_60090f8350266.pdfIn PDF document text
    • http://rumukisizupew.iblogger.org/37346498594.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/jiihjay/national_geographic_telescope_nt114cf_app.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/yegdAYF/wavowujiwapilapemobofug.pdfIn PDF document text
    • http://gesemalisezusa.iblogger.org/deled_assignment_front_page_format.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446152/normal_600f1862b8fd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465924/normal_601d053ea325f.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/semuxemakaw/resewimimokakasemedebiza.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/ronibalelitomepoz.pdfIn PDF document text
    • http://zomimek.epizy.com/xaparotuwotuditaj.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/hypertension_guideline_acc.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/93467250486.pdfIn PDF document text
    • http://tuxugev.epizy.com/avengers_3_tamil_tamilrockers.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_off0000d563.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD563 5716 bytes
SHA-256: 9f3c0c2b28dda51202ab86a3635ce1ef385ceec71e5337294a631ab5d796d46e
font_01_sfnt_off0000e8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FC 10908 bytes
SHA-256: 4ddf8f7da16c18127502139d2da58aaaa463803812c7489a63ff204b4464563e