Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0f2ca268358a2dd…

MALICIOUS

PDF

66.6 KB Created: 2020-12-17 14:50:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 28730fe1e7454b06e0e2c21a0e93bf85 SHA-1: e44cb101208d96ed0c949d3a6625a45721eb2191 SHA-256: d0f2ca268358a2dd3edc341de4b9b413bddd816b135b3073626fe323ba867776
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with one pointing to 'traffset.ru', a domain flagged for suspicious activity. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document's content and structure suggest it's designed to deceive users into clicking malicious links.

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
  • 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://traffset.ru/123?utm_term=the+thyroid+diet+revolution+pdf PDF link annotation
    • https://pimakiwukusa.weebly.com/uploads/1/3/4/7/134712386/1261784.pdfIn PDF document text
    • https://diwowure.weebly.com/uploads/1/3/4/5/134592565/6782a9a893.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414169/normal_5fcb09b720aad.pdfIn PDF document text
    • https://rimosuvifakub.weebly.com/uploads/1/3/4/3/134310068/8737281.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495043/normal_5fad806ba1dc9.pdfIn PDF document text
    • https://sapafusazefo.weebly.com/uploads/1/3/4/4/134496158/4132bae129b7.pdfIn PDF document text
    • https://lezogujivezubix.weebly.com/uploads/1/3/4/8/134878846/9593430.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414172/normal_5fb60f82b971a.pdfIn PDF document text
    • https://vuwugaletop.weebly.com/uploads/1/3/4/5/134588193/8887902.pdfIn PDF document text
    • https://nabolonoroxene.weebly.com/uploads/1/3/4/3/134373159/xofekogoberula.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sitozi/27820608660.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ba3b0a2757459be1f9cb/t/5fc2b85d5147b148048c23e7/1606596702085/dragon_touch_y88x_user_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf627afa04221c71181197/1606378107662/is_sucrose_polar_or_nonpolar.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e15d7d0c8f249d40b1da/t/5fc24ec23570fb44d14e18ca/1606569668298/niterepevujabuxim.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfae98bc8713fe6fda201/1606220522530/all_are_welcome_haugen_chords.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_off0000c955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC955 4852 bytes
SHA-256: 027d3d094384509acc1d62c1e3dc7c5b41cd445bf8f711a546e5e97d2a2f1492
font_01_sfnt_off0000d9df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9DF 10584 bytes
SHA-256: 63ebc0ee53d48f99835b031b66b5e93a18c12c2864dfcacba2982ebcd20ae70d

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