Malicious PDF — malware analysis report

Static analysis result for SHA-256 cffae8d5dc394e13…

MALICIOUS

PDF

40.6 KB Created: 2020-08-06 01:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 30cf0f038818e1f135e3168d2c176736 SHA-1: 2a6731f333a509a797ab2d37780dd53e84cc1959 SHA-256: cffae8d5dc394e137c103167b07e04b35368abfceb35b2f6b43975fa59217b37
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, one of which, 'https://ttraff.cc/pify?keyword=supply+chain+management+pdf+download', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'supply chain management pdf download', reinforcing the lure. The presence of a large number of external PDF links, many hosted on cdn.shopify.com, suggests a link farm designed to distribute malicious content or improve SEO for malicious sites. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=supply+chain+management+pdf+download In PDF document text
    • http://files.stjosephministry.com/uploads/1/3/1/4/131483361/1cbdf8.pdfIn PDF document text
    • http://kukise.580craftbeermarketplace.com/uploads/1/3/1/4/131437363/4914226.pdfIn PDF document text
    • http://files.mrsmuenks.com/uploads/1/3/0/8/130814106/8189373.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/1/0433/4062/8120/files/kazudisarulunexixuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9138/5758/files/79652721584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/7608493696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/buweluwezilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/26791487798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tozonolemudafolafoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5308/7901/files/10282446229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/2681799814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4574/6838/files/15774219063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5391/6060/files/24167886648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8531/5737/files/91895985900.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F45 5592 bytes
SHA-256: 8bd08375cadf8bd35c8b3d706c093efe78e870c77949741425a84439d6d29bb0
font_01_sfnt_off00007244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7244 10392 bytes
SHA-256: a6d97f00339992c87ee7cb6eb90959dbdb0f02316d99f0fcc38708a2ae52e4f5

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