Malicious PDF — malware analysis report

Static analysis result for SHA-256 c12ff7bacb8c5be4…

MALICIOUS

PDF

53.3 KB Created: 2020-08-17 14:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b4c1665eae7802dc384139e3d9b5022 SHA-1: 928c839b62d7b1a3e13c785ebb7948287e5b63b7 SHA-256: c12ff7bacb8c5be40abfda8b8e1712779998116e7caed1be667be329ef7163c7
194 Risk Score

Malware Insights

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

The PDF document contains a malicious redirector link disguised as a free Android game download. This link, 'https://ttraff.com/pify?keyword=baixar+apk+de+jogos+para+android+gratis', is designed to lead users to potentially harmful content. The document also features a large number of links pointing to various PDF files hosted on Shopify and other domains, suggesting a link farm or SEO poisoning tactic to increase visibility and traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=baixar+apk+de+jogos+para+android+gratis In PDF document text
    • http://files.t-mosaic.com/uploads/1/3/2/6/132680853/mazuvugarifaper_wofexirupironud_gitolaroxama.pdfIn PDF document text
    • http://files.mistynielsenphotography.com/uploads/1/3/0/8/130813869/e2362b010a.pdfIn PDF document text
    • http://simoten.lbennett1039.com/uploads/1/3/1/4/131454065/08ba4df8.pdfIn PDF document text
    • http://files.ttminaples.com/uploads/1/3/1/3/131379296/totinivasufuwun-temof-fokol-nasagexabiraz.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/1/0433/8669/9925/files/mixed_approach_to_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/nabawotedafonolovobeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5913/2054/files/alkyl_and_aryl_halides_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/asme_section_viii_division_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/zaluxukona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/54741532090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4922/2298/files/30779565620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4903/3627/files/42758727307.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E53 4780 bytes
SHA-256: 1bbf7fc18e93765d8342e0ef7e7a2d5ef783bd620fd41b7c86b6ebe0e4705607
font_01_sfnt_off00006ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF1 5352 bytes
SHA-256: f6b6df3cebd3e84e76f60541871fce0eacbfb1bd6e8e1f63d4f5522a7f8d23c4
font_02_sfnt_off0000813e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x813E 2508 bytes
SHA-256: 977d55c4c3af4355f2f988086b689a2904d42640a1e21e49133944348a8f02d5
font_03_sfnt_off00008c6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6B 11720 bytes
SHA-256: 6596b5ff5144c65a826387a40167dccda07db25f98b65734087792a0c9079364
font_04_sfnt_off0000b300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB300 16036 bytes
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940