Malicious PDF — malware analysis report

Static analysis result for SHA-256 3df858b64a4200fc…

MALICIOUS

PDF

70.4 KB Created: 2021-02-23 12:38:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8498b906f8cb295fb6416dc97edc1c5b SHA-1: bbe8580e4f4b4bdb0cc652ee4e2d08d2b3c4dd7e SHA-256: 3df858b64a4200fccf491df0c4cd0e6455c3e43e8d6ea69186f1679a181eabb7
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=xanathar%2527s+guide+to+everything+errata PDF link annotation
    • http://helplnstagram-confirm.com/what_foods_can_you_eat_on_an_anti_inflammatory_dietm714e.pdfIn PDF document text
    • https://cdn.sqhk.co/kumotuxijufu/hhjji7P/toxigutusesutokala.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462775/normal_5fcd6213e4338.pdfIn PDF document text
    • https://cdn.sqhk.co/zunesunatiri/qwhazgd/noxupagakadazozemin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379054/normal_600d87e282091.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467036/normal_5fe4b810bd851.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382421/normal_5fd281d862a47.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447626/normal_5fe378bd3d76d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391303/normal_5ff257324819a.pdfIn PDF document text
    • http://netewe8.xyz/fantasia_sevillana_turinaoypro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374368/normal_5fc95f808fcdb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nilafafakem/fomonawuf.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/avengers_assemble_episodes_tamil.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8EB 5112 bytes
SHA-256: 88f95f931013cbc5328108227b50b59614f1c2b28940b1fe5d490d42b95e4c4f
font_01_sfnt_off0000da4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA4C 10628 bytes
SHA-256: d471f1c94ed75c0603bc17b50413f33373d34ace24e66947a48799531e2c2475
font_02_sfnt_off0000feb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEB4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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