Malicious PDF — malware analysis report

Static analysis result for SHA-256 148b74c377f00805…

MALICIOUS

PDF

68.3 KB Created: 2021-02-06 14:39:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8d280d2b418877f73e814e487015bda3 SHA-1: cb2fd585e45964da29fcd38ba4e2b24d5b0c9d45 SHA-256: 148b74c377f0080535a960e9ea8603d6bf24b3e677691945411cedf7c40064d5
244 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
  • 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.
  • 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.
  • 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://yafferge.ru/wb?keyword=honda%20fit%202009%20manual In PDF document text
    • https://cdn.sqhk.co/wezupobuwab/gr8hbSv/68913185530.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377109/normal_5ff0018c46464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410016/normal_600caa78ae4c3.pdfIn PDF document text
    • https://pimelotug.weebly.com/uploads/1/3/4/5/134576353/4bcb73efc.pdfIn PDF document text
    • http://libotopatolar.iblogger.org/camino_de_santiago_self_guided_walk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449605/normal_5ff9dfe7e0364.pdfIn PDF document text
    • https://cdn.sqhk.co/mitebosareki/ifgejb7/bazuvug.pdfIn PDF document text
    • https://jowatewiko.weebly.com/uploads/1/3/1/3/131380225/xevadaberefofomufix.pdfIn PDF document text
    • https://cdn.sqhk.co/logubaxe/i2pUUje/music_volume_eq_apk_old_version.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/bgEaGN7/bloomsburg_university_bookstore_hours.pdfIn PDF document text
    • https://zomereke.weebly.com/uploads/1/3/5/3/135397468/meliwibopamabu.pdfIn PDF document text
    • http://dugules.iblogger.org/larixawakido.pdfIn PDF document text
    • https://mebevoluw.weebly.com/uploads/1/3/0/7/130739105/66923cef3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xiwaresijo.epizy.com/area_of_compound_shapes_worksheet_year_5.pdfIn PDF document text
    • http://xitutudatiri.epizy.com/66445697040.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_off0000ce03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE03 5172 bytes
SHA-256: 47de817f32cbb5c6110d11bea81223883c3c0414fecb59154a3ffa421ce9cfc7
font_01_sfnt_off0000df8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8D 10892 bytes
SHA-256: 5546bc9d8a6df8df5ff4cbf68aa54c569e45e04991e4a80c4c7cd00eb94a3e79

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