Malicious PDF — malware analysis report

Static analysis result for SHA-256 910d6a73f7ec6a6e…

MALICIOUS

PDF

70.8 KB Created: 2021-02-11 20:52:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 44daaeed4ac6a995e11e4b0f3ff83077 SHA-1: bc33d22956f9fcfd44859a428e9453c1f47f87e5 SHA-256: 910d6a73f7ec6a6e5eab564ddbf7922fd650a033766790fd08057db198f65371
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/wix?keyword=manual+workout+strava PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471236/normal_600d4313a52f7.pdfIn PDF document text
    • https://wivutukezed.weebly.com/uploads/1/3/1/4/131438473/tupatomerigagabizew.pdfIn PDF document text
    • https://zuwuloju.weebly.com/uploads/1/3/2/6/132681456/4274d9a36e5213c.pdfIn PDF document text
    • https://xakewalite.weebly.com/uploads/1/3/4/8/134882175/jigumawubupeku.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxapivasif/jdjdAfv/nvidia_shield_steam_link_4k.pdfIn PDF document text
    • https://povemiloten.weebly.com/uploads/1/3/4/6/134608376/c22afbf2386f2b5.pdfIn PDF document text
    • https://gixujadimi.weebly.com/uploads/1/3/4/7/134708567/411479.pdfIn PDF document text
    • https://gaxuzuwe.weebly.com/uploads/1/3/1/8/131871814/2087501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498366/normal_602096d93819b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412415/normal_6012a38d94723.pdfIn PDF document text
    • https://cdn.sqhk.co/masunidupag/Nplhagg/57619444288.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466367/normal_600a9f287b264.pdfIn PDF document text
    • https://zuseluxutiv.weebly.com/uploads/1/3/4/6/134686448/beregaxotifopexupu.pdfIn PDF document text
    • https://cdn.sqhk.co/vijukifezu/cLjehho/1080p_skull_wallpapers_for_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383800/normal_5fed1471e5cf2.pdfIn PDF document text
    • https://cdn.sqhk.co/bepesewutu/qFUhigh/givezotuwivemutafutiw.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_off0000d9d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D2 4900 bytes
SHA-256: 026c9ec081af678d9a67e75eb42c0610c8a73b978f5ffc10e117dacb3eb61f0c
font_01_sfnt_off0000eaaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAF 10548 bytes
SHA-256: 3117e7e495cc0b02a727441a444afc8829bd5d834b2fccf1ca52dc9232da43a8

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