Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c5f85e5ad817524…

MALICIOUS

PDF

44.1 KB Created: 2020-08-03 05:32:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b565a4c7d76f7fac0550f1d8a4c5e716 SHA-1: d6ce33b5fca644d7d377f2431350158dbb71393e SHA-256: 0c5f85e5ad817524a1c5dff09b484bf2004e0b10d111d888b5ca2e4d549e90e9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body and heuristics indicate a lure for free downloads, likely a phishing attempt to redirect users to malicious sites. The ML classifier strongly supports the malicious verdict.

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/pify?keyword=ccna+data+center+pdf In PDF document text
    • http://titide.dsdominion.org/uploads/1/3/1/8/131857419/ccab5e2959794.pdfIn PDF document text
    • http://files.beclewisfiction.com/uploads/1/3/1/4/131437702/bekigedobezomij.pdfIn PDF document text
    • http://files.streamteamsunited.org/uploads/1/3/0/8/130874526/09ebabe00fee9.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/1/0428/5274/5375/files/banozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0927/7095/files/29155249720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/12752964119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1095/7210/files/65778424984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3903/8359/files/7656007763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/27127929808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/juvutubaminuxezunix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6604/8164/files/bugaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/tuwomoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0731/9974/files/xirukavofakisupeluluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/vosuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8493/8390/files/20078724190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4499/5221/files/dexaxikatawujisotizasexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2424/5155/files/jupizejor.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 4

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_off00006216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6216 4592 bytes
SHA-256: 2e28cfdd6a7f2ffc4c39b92f79eeba55e5db1b40fbfa328535a6bf97b527b39e
font_01_sfnt_off000071af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AF 10468 bytes
SHA-256: c18dda9829c8e883e0dbbb0d57657102ec1c16a09741ff6630486a7f4881ec73
font_02_sfnt_off00009567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9567 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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