Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fb06411930e28f5…

MALICIOUS

PDF

46.7 KB Created: 2020-08-13 11:02:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1845b3a1f5154e66ae396cfed691fc20 SHA-1: 98807939785ce4e476bf1c3134dc44bcc807a028 SHA-256: 3fb06411930e28f5a30db14d00732e50c3d5d229989b682b0742db923b58e4d3
194 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for containing a malicious redirector link and a large number of external links, suggesting a link farm. The primary malicious URL identified is https://ttraff.ru/wb?keyword=logo%20modernism%20book%20pdf. The document body contains garbled text but includes the same URL and several Shopify-hosted PDF links, indicating a likely attempt to lure users to malicious content through a deceptive document.

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/wb?keyword=logo%20modernism%20book%20pdf In PDF document text
    • http://tunabomi.conceptfrontier.com/uploads/1/3/2/8/132814930/6766961.pdfIn PDF document text
    • http://files.bartlettlab.org/uploads/1/3/1/0/131070327/7599519.pdfIn PDF document text
    • http://kiferaku.yogalise.nl/uploads/1/3/0/8/130874043/2101109.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/1/0432/0333/0208/files/24084549194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4484/7261/files/fasozurogupukuxor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40169505762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9123/7794/files/installing_nvidia_drivers_ubuntu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/safesexidorupisemadunuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3651/5221/files/43533787000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7263/4533/files/gotoritogixulog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51098187394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pigagijewunafusigiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/57626287035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/87922133595.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 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A79 5264 bytes
SHA-256: ef3d0de0b0c1090c77c7e7316f46adcf332e79b275f143f6909288a8a7e5db06
font_01_sfnt_off00007c49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C49 3856 bytes
SHA-256: 250f7b761397532fc668ca42bc6ed0f18f47402cef4426b836b91ec0f0b8d1d1
font_02_sfnt_off00008b64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B64 10092 bytes
SHA-256: 9c71c650cc9b42decf7a2c316001acf2029940f5fb79fe644700747d10528662

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