Malicious PDF — malware analysis report

Static analysis result for SHA-256 3de41f5bee7841e5…

MALICIOUS

PDF

52.0 KB Created: 2020-07-24 09:54:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 40252493900a2084814ffd6c64d23649 SHA-1: bb4b753b293d827043de8de8c8f0ee61f51ff801 SHA-256: 3de41f5bee7841e52c13d029698e52c655b0df8c68814a63c9f523f9c4bcc82e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used for SEO link farms or to redirect users to malicious sites. One of the primary links points to a known malicious redirector. The document body appears to be corrupted or heavily obfuscated, preventing a deeper analysis of its specific content or intent beyond the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.ru/pify?keyword=aifmd+reporting+xml In PDF document text
    • http://files.goldenvalleyffa.com/uploads/1/3/1/3/131381772/raguzi.pdfIn PDF document text
    • http://files.flourishkiwi.com/uploads/1/3/1/4/131483097/5519565.pdfIn PDF document text
    • http://files.jollygoods.shop/uploads/1/3/1/8/131871799/5389236.pdfIn PDF document text
    • http://files.bruceloeb.com/uploads/1/3/1/3/131398366/1016339.pdfIn PDF document text
    • http://files.jrouamnationalcouncil.org/uploads/1/3/1/6/131606393/nujariralewanolu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0408/2851/files/36468172126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0559/1200/files/33641071703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/mowakarogefakefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/zejizirurezez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pepefawabibuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0581/1608/files/pobimewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9985/7823/files/fudonoruwevijinaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/68824567379.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85BB 4820 bytes
SHA-256: 6bf69fc8b07c32e607a2546b9ef90b27c520bfc45b7d4e81a95fd23c4c9a4fbd
font_01_sfnt_off000095fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95FE 14624 bytes
SHA-256: 0ebcb76ad5be651da0200cb0d1139fb80e75785a80663a77c3ace36866399fd0

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