Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdcc40856693ac92…

MALICIOUS

PDF

100.0 KB Created: 2020-12-23 08:01:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 22a9e1fffd4f439f982cbe6fc9eb5512 SHA-1: 41b50d4a2ee1b63dd8a138df512520ebae22c4a5 SHA-256: bdcc40856693ac92a5e69103a75b195636b4d07ed48469f0ef52ca8b052a97e3
196 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, many pointing to SEO redirectors, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URLs and the nature of the heuristics point towards a phishing lure, likely distributing further malware or leading to credential harvesting sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • 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.
  • 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://trafffi.ru/strik?utm_term=judgement+vs+judgment+canada PDF link annotation
    • https://betirowi.weebly.com/uploads/1/3/4/6/134661799/todis-xiserude-gerowani.pdfIn PDF document text
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/zujiworawubobuwidopi.pdfIn PDF document text
    • https://lowisaxov.weebly.com/uploads/1/3/4/3/134361609/kemurura.pdfIn PDF document text
    • https://pevaluxuduta.weebly.com/uploads/1/3/4/5/134502983/lizofax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392853/normal_5fb85efa39370.pdfIn PDF document text
    • https://fusajebotiv.weebly.com/uploads/1/3/4/3/134320253/zopujekomevenazolati.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a7493a8b-9a4a-46d5-9b93-83dea2c06773/new_trending_whatsapp_status_video_download_sharechat.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe1ab0a91b711015743259f/t/5fe262fa4d81314b61d6ab7c/1608671995443/genogram_template_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcea14de29cf17e8f702bb6/t/5fd66f26ab1a676c729031d3/1607888678646/62331410874.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c362403f5353fd950a5e/t/5fc12ef73f75b16643fefd0b/1606495995640/21839747866.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11d2540f1034a5caa1a86/t/5fcb9bfd26a2be7f6de7935c/1607179262337/76736919727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba6bda8f-dedd-45a3-8aaf-126fd217733a/luzip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b913fef-e28c-4ccb-8bfb-dc69a0b05080/im_gonna_end_this_mans_whole_career_meme_template.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012dbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DBC 4056 bytes
SHA-256: 099cd520b795c527f308ff65f430b317332206873c7a7d29e640c75d47292373
font_01_sfnt_off00013c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C1B 4980 bytes
SHA-256: 5dd9abf27adeec29a0a033497e1e3822be61cf15da9a6c62999f1cc2dcc434b2
font_02_sfnt_off00014cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CFE 11684 bytes
SHA-256: 6e462ec3b5d3d0e0f528b8e54f2c2a0d5e474daee486416dda54050edf5472ca
font_03_sfnt_off00017453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17453 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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