Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbee8293259c79a1…

MALICIOUS

PDF

67.6 KB Created: 2021-01-23 14:23:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 40a9ce5039e81cd80d1934f18faaabcd SHA-1: 673ebcdb9e26a57c0a9b013463a634c88f5ee41d SHA-256: bbee8293259c79a1bfc1f6f1f9dc0d35273beaa702177a038ff1d61d7395d181
242 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded links pointing to various disposable hosting services, indicating a link farm designed to redirect users. One of the initial URLs, 'https://yafferge.ru/aws?utm_term=play+xbox+one+on+android+tablet', suggests a potential phishing lure related to gaming or technology. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8224

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
  • 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.
  • 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/aws?utm_term=play+xbox+one+on+android+tablet In PDF document text
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/16331897c6.pdfIn PDF document text
    • https://site-1247346.mozfiles.com/files/1247346/54741881296.pdfIn PDF document text
    • https://site-1178814.mozfiles.com/files/1178814/rodoxanaxo.pdfIn PDF document text
    • https://sozizupisez.weebly.com/uploads/1/3/1/8/131872239/defero.pdfIn PDF document text
    • https://site-1175927.mozfiles.com/files/1175927/72166139373.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408319/normal_5ff288fe21337.pdfIn PDF document text
    • https://duloduwo.weebly.com/uploads/1/3/4/8/134850843/54feca3b871d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475379/normal_5ffd613a3bb36.pdfIn PDF document text
    • https://site-1168389.mozfiles.com/files/1168389/suxufekonokegezoxi.pdfIn PDF document text
    • https://tadonajates.weebly.com/uploads/1/3/4/3/134319020/zeridamubukerelufof.pdfIn PDF document text
    • https://vizedaxitexoter.weebly.com/uploads/1/3/4/7/134740617/niriwa_xilikodupaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484156/normal_5fe81980ab4f7.pdfIn PDF document text
    • https://jomopejizudo.weebly.com/uploads/1/3/4/6/134664487/seraroroso.pdfIn PDF document text
    • https://mirivibi.weebly.com/uploads/1/3/4/2/134234555/64456d40bfd9.pdfIn PDF document text
    • https://marajudalade.weebly.com/uploads/1/3/1/4/131438096/6096732.pdfIn PDF document text
    • https://site-1168513.mozfiles.com/files/1168513/sdf_3d_apk.pdfIn PDF document text
    • https://site-1176622.mozfiles.com/files/1176622/erpnext_user_guide.pdfIn PDF document text
    • https://vidisuxusa.weebly.com/uploads/1/3/1/6/131606291/bevakilifideto_rozarubewol.pdfIn PDF document text
    • https://kixujededewi.weebly.com/uploads/1/3/0/8/130814479/tawogoniwurizo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484618/normal_5fced500e48e3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA0 4740 bytes
SHA-256: 8550f8786d620874c9bb6b8954958304661929ba9b1d9d1c723222d6efafc704
font_01_sfnt_off0000edbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBC 10768 bytes
SHA-256: 2195acf2547fb68a01fd8589200357b5090a32d90d23eb3d86444ac1846569ed

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