Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dbfbd4fbfcab6cf…

MALICIOUS

PDF

69.5 KB Created: 2021-02-02 21:28:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9e375703585420e6cbff22f79d82f4b0 SHA-1: 5cb3d9618895669af5382583eb2393c4a733c5c6 SHA-256: 7dbfbd4fbfcab6cfe321a93b66ef4d0cb2bde8c40ced0b585a0ca5bee903abc1
194 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
  • 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=archero+mod+android+republic In PDF document text
    • https://cdn.sqhk.co/xamitarerivu/r8hiwgd/radio_rock_89_online_ao_vivo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483833/normal_5fe15e3349943.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467043/normal_5fe705e141eb5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453102/normal_5ffdddd25efef.pdfIn PDF document text
    • http://magicwoolshop.com/odyssey_sci_fi_mech_rpga8k79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445103/normal_5ff5402c7c478.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374364/normal_601258f13164a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401971/normal_5ff58a0890b25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468255/normal_5fd245410d1bf.pdfIn PDF document text
    • http://ukranews.icu/wodojovomexakuxosm7pxt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405904/normal_5fe6981d3c885.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486982/normal_60092bd9ab373.pdfIn PDF document text
    • http://want-seo.ru/interview_vocabularydek22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366358/normal_6015a541823e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413583/normal_5ff02e25a476f.pdfIn PDF document text
    • https://cdn.sqhk.co/xedasuzefer/uicjj4p/talking_tom_friends_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464730/normal_5fe7e828bedaf.pdfIn PDF document text
    • http://marketop.club/58588119263kp2zm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD15E 5264 bytes
SHA-256: 5c2f43444350d567070322943a673bf7d4e5e78827ebe643cdb78144054ac2aa
font_01_sfnt_off0000e30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30D 10756 bytes
SHA-256: f8de09f857d629689318e58abb6db6b1c28772cb51571f65b2c194f864ef8a4b

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