Malicious PDF — malware analysis report

Static analysis result for SHA-256 0be9b6574f4f1fde…

MALICIOUS

PDF

65.2 KB Created: 2020-11-22 02:03:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: fca3cbb72c0f7b6af2ccc23774b0c6d2 SHA-1: ca9511ee288f8f2fd9f085e497f1ad859815d235 SHA-256: 0be9b6574f4f1fdeaf57cd756cf271f888ce9ad4158908ae4b07af16c1e88ca0
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, with one pointing to 'traffking.ru', suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded links are characteristic of lures used to direct users to malicious websites for further exploitation or credential harvesting.

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 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.
  • 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://traffking.ru/aws?utm_term=weighted+average+in+excel+sheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f91f5501a97f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481830/normal_5fb4b0818a5be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478926/normal_5fb605dab598d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417658/normal_5fa20e8281ffe.pdfIn PDF document text
    • https://tojezupemizeraw.weebly.com/uploads/1/3/4/6/134629845/8452915.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5f88d78864d33.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/lefemijip/movie_app_er_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/the_forest_trophy_guide_steam.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/belajar_macro_excel_2007.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/business_letterhead_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/rangasthalam_audio_songs_free_in_telugu.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_off0000c210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC210 5344 bytes
SHA-256: 964025f3f42882a9fecf42b0964a9b3d70d148c35331a051738d98d1b641fc04
font_01_sfnt_off0000d44a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD44A 10612 bytes
SHA-256: c9cbd49866576f864a08d988e0800c4cd9549ae45a854aa27655c973ac37a0b8

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