Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f407f751b44d582…

MALICIOUS

PDF

81.9 KB Created: 2021-03-03 23:14:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 490f01a26fff6cd72a2beb1a1eddfb06 SHA-1: 898d9f18c659e1cb833bbe230c96d7da829cfdde SHA-256: 7f407f751b44d582a0ecd5f4024ee8e234ff06be58fe80330c65986ba1aeb347
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://ponafet.ru/award?keyword=kingkiller+chronicles+university+map PDF link annotation
    • https://cdn.sqhk.co/xaxovowupofa/hgD7hhj/kudelad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475728/normal_5ff31acaad731.pdfIn PDF document text
    • http://legalvictory.group/80265300797iqkdv.pdfIn PDF document text
    • https://cdn.sqhk.co/judixixelof/jaiaGHj/walking_dead_new_frontier_achievements_not_unlocking.pdfIn PDF document text
    • https://cdn.sqhk.co/zowipitilo/RCrtg61/54296893949.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/4Ridejf/tifatafenoboniwute.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_6037eba71414b.pdfIn PDF document text
    • https://cdn.sqhk.co/lunosupi/yJajbgg/vavuz.pdfIn PDF document text
    • https://cdn.sqhk.co/japexexuko/jb5IJjg/thrift_stores_in_lower_manhattan.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/hHjcCX3/knife_sharpener_in_spanish_translation.pdfIn PDF document text
    • http://rabota-plus.club/81315603642w4urf.pdfIn PDF document text
    • https://cdn.sqhk.co/risenulowo/CKECib3/52275550245.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxofalu/qhfFTgA/paladinz_champions_of_might_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/jaihgfr/cafe_racer_unlimited_money.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489041/normal_5ff84ee022586.pdfIn PDF document text
    • https://cdn.sqhk.co/xumesapaxoku/CgfhhE4/screen_lock_time_password_old_version.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://betetedapunu.epizy.com/metal_gear_solid_5_phantom_pain_change_character.pdfIn PDF document text
    • http://zovawawopo.rf.gd/balanza_de_pagos.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_off000103f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103F2 5544 bytes
SHA-256: c34f81e728c1c289d31c7ea3eda332f2d73f65226319a4ab483b8063ed5e0c5d
font_01_sfnt_off000116b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116B8 10492 bytes
SHA-256: ce9bab46560aa5183e8083f92b3731e5e5c99fe4a26728140940714a57be8d8d