Malicious PDF — malware analysis report

Static analysis result for SHA-256 af6388d2dea467bc…

MALICIOUS

PDF

52.3 KB Created: 2020-08-25 03:17:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8d5daf6803396d1a89fb692ab9f6a20 SHA-1: e8c703376a8ee451d8f05ef9e5b7fad12174de27 SHA-256: af6388d2dea467bcfbd83b617c322fa6bce273cacb305af6ba0e280c2a204121
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a high number of embedded external links, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=query+google+sheets'. The document body also contains this URL, reinforcing its role in the attack. The presence of numerous shopify.com links, while some are confirmed benign, suggests an attempt to blend malicious links with legitimate ones.

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=query+google+sheets In PDF document text
    • http://wetafinaf.wtd-peru.org/uploads/1/3/1/1/131164250/292b5279.pdfIn PDF document text
    • http://zegeru.gktfreechurch.com/uploads/1/3/1/6/131637881/6761200.pdfIn PDF document text
    • http://files.cliqueticketproject.com/uploads/1/3/1/6/131606345/tukajewebaxotiz.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/1/0433/4957/3784/files/lp_stemi_anteroseptal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6590/8136/files/gisojixunulesagoterewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4617/3852/files/28112418106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6795/5610/files/jifikekakogewok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1241/5897/files/xulosopofegutonuruma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8855/2870/files/complete_list_of_root_words_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4836/8288/files/22542597882.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 5

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_off00008fd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD3 4900 bytes
SHA-256: 611c3de1af3b6c29444ee72eee590f5a8d8f489b03107467261912fdc32e28d3
font_01_sfnt_off0000a088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA088 10588 bytes
SHA-256: 5381c76e193e45e57bd4a6f4902917700acfdca6add2ddaf79a35284ea29f32f

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