Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cffae04a0586f0b…

MALICIOUS

PDF

45.4 KB Created: 2020-07-28 12:16:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f784c2ba921589e291bd4c350e781742 SHA-1: b8e14da9e15c466eaf13c1295e65aa376b6e64e7 SHA-256: 0cffae04a0586f0baaaa881e99f2f8405f675b1cf9afa8bdb74894d0233fd599
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The primary redirector URL is 'https://ttraff.ru/pify?keyword=hybrid+bike+tyre+pressure+guide', which is also flagged as an SEO redirector for free-download phishing. While no scripts were extracted, the PDF structure and link farm suggest an attempt to drive traffic to malicious sites.

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=hybrid+bike+tyre+pressure+guide In PDF document text
    • http://files.se-gaming.com/uploads/1/3/1/4/131406736/4ac7f.pdfIn PDF document text
    • http://files.doitforthemems.com/uploads/1/3/0/7/130775868/kadanuzepab-rulewopaxewi.pdfIn PDF document text
    • http://files.thurmontmainstreet.com/uploads/1/3/2/7/132712163/zodukunokizak.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/1/0431/1715/0357/files/90348824517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5461/2123/files/bomidoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0905/6668/files/62204782641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5795/4467/files/52775133877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3864/4123/files/fuzekivameleduviminowita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1573/2381/files/neredotinedavelide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nomevorijodasulalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5769/2320/files/29270945231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0416/4257/files/81965122197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/66013601135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4485/5195/files/59433106713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/sezafakeged.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 8

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_off00007594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7594 4816 bytes
SHA-256: b412236a19e95941a1218dd36997879c76ac1fba61b2ae5976834806eb885e2e
font_01_sfnt_off0000860b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x860B 10100 bytes
SHA-256: 3a231edadf237627b3bbdacf473015f76c7cec09c521a113fe06ec4cf014295c

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