Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f6f4a723b78df8c…

MALICIOUS

PDF

66.3 KB Created: 2020-12-30 09:21:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: 1a4a167bf866a4b11c47feab9bb46ee1 SHA-1: bcadbde59d13b7d011d246f61d2806507236816d SHA-256: 1f6f4a723b78df8c2bf01aa1a857b8840bdf67f2f7a64a271f2e812067ad2164
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://trafffi.ru/wb?keyword=fashion%20beauty%20salon%20raipur PDF link annotation
    • https://wojawafelufofux.weebly.com/uploads/1/3/0/8/130813934/62fc0829e68c792.pdfIn PDF document text
    • https://vepoxiwoja.weebly.com/uploads/1/3/1/1/131164136/sobuwavetuked_jetizulika_lezoxas.pdfIn PDF document text
    • https://nidixinaxob.weebly.com/uploads/1/3/0/7/130739699/rezenamupo.pdfIn PDF document text
    • https://sovawetozinunur.weebly.com/uploads/1/3/1/4/131407226/6d1f7.pdfIn PDF document text
    • https://letotanuvimipe.weebly.com/uploads/1/3/4/5/134598603/fetubewerog-todijororexoto-fuxakapejosuso.pdfIn PDF document text
    • https://repotadidutu.weebly.com/uploads/1/3/4/3/134310826/mogog.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxebiseso/hgghchi/tosagenufevamejikodorozo.pdfIn PDF document text
    • https://lepepapiminokuj.weebly.com/uploads/1/3/4/4/134493398/rowodaf.pdfIn PDF document text
    • https://jaweditulopo.weebly.com/uploads/1/3/4/3/134313576/7572158.pdfIn PDF document text
    • https://cdn.sqhk.co/javejako/hhheigs/40077507245.pdfIn PDF document text
    • https://faneboluti.weebly.com/uploads/1/3/4/4/134464249/dexesuk_boguxizivazujet_zopimozaro_fikumalewujival.pdfIn PDF document text
    • https://konezevebul.weebly.com/uploads/1/3/1/3/131381420/cdd7e03dbd10bec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/acf6a14f-c516-4ea6-81a4-553ddf2f8e09/hedgehog_wallpaper_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eb143fd-8f9c-4719-8ccd-84afca298ea0/80665949547.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61e404b8-2e95-4a29-aa89-e8a1685c89aa/vibusigitozibus.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_off0000c7b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7B5 5104 bytes
SHA-256: 6082c7eb361828b851f086d0ef829f2a7292f9c092b0c2170e5b4cfb517bbf3b
font_01_sfnt_off0000d90e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90E 10420 bytes
SHA-256: b772e99a2851cb89836ff0bc44335f06ac6d93a9b5a204ed6a3dee2ce4944e05

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