Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e2e9fb18b428caa…

MALICIOUS

PDF

42.4 KB Created: 2020-11-09 01:41:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b9ea0b903ec248c84897e6e85f94a330 SHA-1: 75ea90e773abf7776631a0b0ee89d38d8131a18d SHA-256: 2e2e9fb18b428caa012661cfb4a8ded2b956bd67682d56571bfc5451ecf42642
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'traffine.ru'. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to lure the user to a malicious site. The presence of multiple embedded URLs and the ML classifier's high confidence further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://traffine.ru/123?keyword=skintology+md+on+amazon In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376625/normal_5f9d3d3ce3e01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5f90b7a1918d9.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/likanutavorolebonat.pdfIn PDF document text
    • https://bameveba.weebly.com/uploads/1/3/4/1/134108569/448849.pdfIn PDF document text
    • https://sojizekupiguj.weebly.com/uploads/1/3/4/5/134586608/vudonum-robovijonupenus-rowuro-ferix.pdfIn PDF document text
    • https://rugeponejap.weebly.com/uploads/1/3/4/4/134487210/bexitopapujibu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411702/normal_5f969ac280075.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f87313137c86.pdfIn PDF document text
    • https://wedebiki.weebly.com/uploads/1/3/0/9/130969436/4ba28aabbecc56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369514/normal_5f90f02b85e54.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/kavitokolezub/bearing_numbers_explained.pdfIn PDF document text
    • https://podawigiwoko.files.wordpress.com/2020/11/33601483142.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcb83fba-490d-4a1c-bb07-d1101195b345/reconnaissance_vocale_windows_7.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_off00006428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6428 5192 bytes
SHA-256: 60f161184cefbf9689d8da71a51ef91f3402d9ec50465d1a648a22e4636f3dba
font_01_sfnt_off000075d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D5 10996 bytes
SHA-256: 95a0a2bda6b6ba703a1264815bd331fcb6564375e2cad3397f0447af8af97b89

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