Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc9080c37a9372ed…

MALICIOUS

PDF

39.8 KB Created: 2020-08-16 23:12:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 22098a9fbcce53b7690d4ed695ae66e5 SHA-1: a834f9130f527e67f2127691989c2d4ba717d26e SHA-256: cc9080c37a9372edcd62bc4889cbd8bb53cd5f5fe89897d20b09dbe17f634cef
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The embedded URL 'https://ttraff.ru/pify?keyword=giving+form+template' is a key indicator of this malicious redirection. The document body, though heavily obfuscated, contains references to a 'giving form template' and appears to be generated by wkhtmltopdf, suggesting a lure to trick users into clicking the malicious link. The ML classifier also 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.ru/pify?keyword=giving+form+template In PDF document text
    • http://files.lknailsandbeauty.co.uk/uploads/1/3/0/8/130814225/6f3ab465.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/1/0430/1357/0709/files/34717259594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/pofuwavoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6924/2534/files/63626108098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3343/6066/files/rawajomowuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3429/files/vikuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2680/files/7318394287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3920/2207/files/vfr_navigation_log.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7122/3446/files/mazat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/27017001894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/invitation_cards_for_christmas_party_templates.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 1

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_off00005f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F01 5136 bytes
SHA-256: c7b47198bca1c8b98a29bf98986ae539bad99651cac410e2b0b323a83fbf9f6f
font_01_sfnt_off00007072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7072 10164 bytes
SHA-256: 81a0e06e99f741c900faff16903c03577b21de78392db7b67e0b375802eed3b5

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