Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a180aff9fd4c98a…

MALICIOUS

PDF

112.9 KB Created: 2021-01-15 14:11:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 2a6f4a1720a155b93cbf1bff68f9f0d4 SHA-1: fb1a7d232e0446d99407c1a546e87a0dfa403ffd SHA-256: 2a180aff9fd4c98a5629b8d8a36a842f5ad65dbd64eb4ea68254c0cf093ddc22
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links to external PDF files, many of which are hosted on redirector infrastructure like traffking.ru. This indicates a link farm or phishing campaign designed to distribute malicious content. The ML classifier and ClamAV detection strongly support the malicious nature of this file, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffking.ru/123?utm_term=konosuba+light+novel+pdf In PDF document text
    • https://benedelewerovil.weebly.com/uploads/1/3/1/3/131384674/sibavodigezukegavuf.pdfIn PDF document text
    • https://cdn.sqhk.co/pevejotomoma/oXifKid/regewixetujugakoviwegogi.pdfIn PDF document text
    • https://cdn.sqhk.co/fopalixogul/Rjjibjf/digistyle_app_android.pdfIn PDF document text
    • https://cdn.sqhk.co/razotefo/fqhbhcT/komuzabagegololifepadoro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378157/normal_5f985ba5116e2.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/eQiigeI/36879655272.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465142/normal_5fe60fcd068f0.pdfIn PDF document text
    • https://cdn.sqhk.co/jenexovu/LWgcKjb/cut_3d_model_revit_to_rhino.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/102jVij/28931813405.pdfIn PDF document text
    • https://tekoboxini.weebly.com/uploads/1/3/0/8/130814877/wirakeze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503035/normal_5fc2ce0c153a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457563/normal_5fe7870144df8.pdfIn PDF document text
    • https://cdn.sqhk.co/zitajazasu/pAgeSLU/33716381916.pdfIn PDF document text
    • https://cdn.sqhk.co/xeposetuge/cgjavjg/wumajatazaxisu.pdfIn PDF document text
    • https://cdn.sqhk.co/takularozo/4ghhfhi/36043300564.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/ladojenefe/50431602697.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000132b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B4 21780 bytes
SHA-256: 75776aff2f1839f04cd16518366e7abc12604ad2f0d37e41c6e155d69cc11e0d
font_01_sfnt_off000177fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x177FD 5376 bytes
SHA-256: 62e72e8c58a19567274e06ba68b93c0e9a70b55b6160945e73d80a1e11ff36df
font_02_sfnt_off00018a4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A4F 14288 bytes
SHA-256: 7ecf6f16234593d0c81b975cd055dafed3b6fabc71bbbcd530a8d1c94ae4ad3e

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