Malicious PDF — malware analysis report

Static analysis result for SHA-256 10cdcc69ef5a5a87…

MALICIOUS

PDF

72.8 KB Created: 2021-03-02 12:52:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b85a7e88c6edfd7d74dc46833afc38bf SHA-1: 941b75053a76cf6e0a01f81b748689b2a70a0573 SHA-256: 10cdcc69ef5a5a87d0fb5068606a05be59601874b7fb35f1966f0806d69d5d89
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://fokemale.ru/award?keyword=is+omron+blood+pressure+accurate PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370319/normal_60035e473c724.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427103/normal_60350ace9bdbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405638/normal_602ecc2ff15a8.pdfIn PDF document text
    • http://winatesef.sportsontheweb.net/how_to_amigurumi_crochet_for_beginners.pdfIn PDF document text
    • http://ridaxaki.mywebcommunity.org/42615691283.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379485/normal_5fcad5d116d1b.pdfIn PDF document text
    • http://dijawobal.iblogger.org/62805630411.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460233/normal_5ffb29af39c5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414486/normal_602e08aec9196.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390051/normal_5ff65a88d67f0.pdfIn PDF document text
    • http://kevebofuru.medianewsonline.com/exide_battery_charger_repair_parts.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/jiwotarotavuz/defemaxepiberijogakefo.pdfIn PDF document text
    • http://bofutezexo.rf.gd/88083410078.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/89811238534.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/garage_sale_pricing_guide_2018_canada.pdfIn PDF document text
    • http://xakarejosav.epizy.com/a750e_automatic_transmission_repair_manual.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_off0000e0cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CB 5296 bytes
SHA-256: f7c87050ccbc12868c58ac6803a34e3308eed03209f6c63e4c420fb6d9da8b86
font_01_sfnt_off0000f2a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A6 10368 bytes
SHA-256: 395eadc80c16472246545089a35e651295153c6721347f7dbff3a2eb4e4a0e13