Malicious PDF — malware analysis report

Static analysis result for SHA-256 a867e7b66632796d…

MALICIOUS

PDF

45.6 KB Created: 2020-08-21 22:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6c32e0e44cd649e150da84309dcfb4b SHA-1: fa62544d5973648965b4fe330c21be10f9e60893 SHA-256: a867e7b66632796db9a7123f0e0922ed1eeb0228a676370bb0bab974197441cb
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a resource for free 3D printing models. The link directs to 'ttraff.cc', which is flagged as a malicious redirector. The document also includes a large number of links to other PDFs, many hosted on Shopify, likely as part of an SEO spam or link farm tactic to obscure the malicious intent. The ML classifier strongly supports the malicious nature of this PDF.

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=3d+printing+models+free In PDF document text
    • http://nobezan.royalqueendom.com/uploads/1/3/1/4/131453512/401ae3b2dda217.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/1/0434/5698/7296/files/prime_minister_kamyab_jawan_sme_lending_program_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1722/3840/files/supa_hot_fire_gif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/favumevazokopexifeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8185/9225/files/vinipomonobomakegugomal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50398535586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8355/4202/files/69567799328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5733/8776/files/ccleaner_for_pc_cnet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/23641442078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9644/6878/files/bucket_forks_harbor_freight.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6458/1525/files/canon_in_d_violin_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6452/3926/files/50035390697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunumegosuvuvorewufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5149/1236/files/kivugofomadegon.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7418 5220 bytes
SHA-256: 2a9d8c743b88e664fa482782f87e29192379c4c3d6a608aa96c06f009084c6d6
font_01_sfnt_off000085c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C7 10648 bytes
SHA-256: 0d8f0aeff9d41c44ab15d4a01ad7e9d671bcca8f8d88744b6324264b1401bc64

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