Malicious PDF — malware analysis report

Static analysis result for SHA-256 15cb75e8cdfbe040…

MALICIOUS

PDF

48.5 KB Created: 2020-08-14 12:32:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f8b6d8cfc3e1b270b6d1a6bc3253dea SHA-1: aa2b17c9981cd193f448a438ee50a418b884246a SHA-256: 15cb75e8cdfbe040b8e2b9d68c4029a736c32a5176224ed559a1cf7ba5c264e3
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector URL (ttraff.com), suggesting a link farm or phishing lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM confirm this, indicating the document is designed to redirect users to potentially malicious content. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or scam attempt.

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.com/wb?keyword=el%20anillo%20del%20nibelungo%20wagner%20pdf In PDF document text
    • http://files.tinagutierrezartsphotography.com/uploads/1/3/0/7/130775383/remax-taxopugazaledu-fuluxibejurifuj-lavosiraleset.pdfIn PDF document text
    • http://files.lincolncollegechapelchoir.com/uploads/1/3/1/4/131409526/9547076.pdfIn PDF document text
    • http://botenibaz.mamss.org/uploads/1/3/1/1/131164250/1028684.pdfIn PDF document text
    • http://fofedizas.birdsontheniagara.org/uploads/1/3/1/0/131070858/5119794e7c.pdfIn PDF document text
    • http://najuto.5-s-poodles.com/uploads/1/3/1/4/131483337/6899735.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://cdn.shopify.com/s/files/1/0433/0687/7080/files/1741436775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8488/0798/files/breville_toaster_oven_bov800xl_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/rutotagofoturojukigokedoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4012/9692/files/kenop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8531/5737/files/39337819594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9910/6983/files/43821169418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6078/1465/files/40427569466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/classical_apologetics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4149/6986/files/52481743108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4031/6311/files/10845392937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3116/7137/files/sobufiv.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_off0000710e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x710E 5020 bytes
SHA-256: d7b1bc3c0ccb5a37a5c5ea4216d88771814a10aa13b1c4e8e7a3b0907df9117c
font_01_sfnt_off00008233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8233 10708 bytes
SHA-256: 758be5f342cb3278c8e1b56fb5aa1f19253940162e18b8178639695bea22d9f0
font_02_sfnt_off0000a536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA536 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3