Malicious PDF — malware analysis report

Static analysis result for SHA-256 3104deb18eb269ef…

MALICIOUS

PDF

69.4 KB Created: 2021-02-20 06:31:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d649c2a07f69e925a283e2ba6cab07b7 SHA-1: 2e56ed74bcead9e7bcda87b67ee8334ebb2eb011 SHA-256: 3104deb18eb269ef9eeaa4b80696efb22fd5149b0e8b09ef4b316237d0ed5bcd
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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/wix?keyword=hunger+games+book+2+online+free+pdf+download In PDF document text
    • http://lidlid.xyz/paladin_spell_list_5egxdhh.pdfIn PDF document text
    • https://jasebezaf.weebly.com/uploads/1/3/4/6/134630561/8594039.pdfIn PDF document text
    • http://presente-top.store/robejufatapiroma328ar.pdfIn PDF document text
    • http://4kuhd.me/ben_10_alien_force_the_rise_of_hex7gia5.pdfIn PDF document text
    • http://store50off.info/toyota_corolla_2012_repair_manual0ia7o.pdfIn PDF document text
    • http://vashe-zdorovie.xyz/valuvirujereserulj6dc0.pdfIn PDF document text
    • http://50offstore.info/bushcraft_richard_graves8e13h.pdfIn PDF document text
    • http://usersdeviceprotectionservice.site/66730031550cub6u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ribafaga.rf.gd/vodewizuwinubabugeli.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_off0000d13a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13A 5748 bytes
SHA-256: 6abdb2a854864f80f3d68c239df063dd232edee067d6c5b9fa656c0f7aaa6d4c
font_01_sfnt_off0000e4ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CA 10656 bytes
SHA-256: 9dab65518bab95631d65814088220aa39085f14cd535ecf624d8fdd47aad1b30