Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff4bff7dc9d94b88…

MALICIOUS

PDF

40.6 KB Created: 2020-08-22 03:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a807d384819d78d0b869d5a23cd25270 SHA-1: f7e7bf7dbc7e895ffb9b41d689e9c614de9235a6 SHA-256: ff4bff7dc9d94b883e1cd48311db1e7c49179e839cf9675266cb6271c514fe16
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a lure for a game mod. The ML classifier strongly indicated maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic fired, pointing to the URL https://ttraff.ru/pify?keyword=game+burnout+drift+2+mod+apk. The document body, though heavily obfuscated, contains references to this URL and other Shopify links, suggesting a link farm for distributing malicious content.

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=game+burnout+drift+2+mod+apk In PDF document text
    • http://xeleke.sailabilitybatemansbay.com/uploads/1/3/2/6/132696067/e3894.pdfIn PDF document text
    • http://zutotaf.rkspeech.com/uploads/1/3/0/8/130874030/wetizudobilu_vemib_domuxon.pdfIn PDF document text
    • http://files.antiquesdiary.com/uploads/1/3/0/7/130775607/5d145185a86fb4b.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/1/0431/6590/9160/files/jidiwalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1561/8203/files/31068001269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/rotuvid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6125/6091/files/pobobunujenusikek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9938/2170/files/bible_download_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4395/3563/files/lobuberesisetamoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/75003957416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/velelebebofasedonakudimed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1610/8701/files/best_sewing_books_for_beginners.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_off00005f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F46 5344 bytes
SHA-256: 16e7d0457dc07b763afc0999c8dd75fd6406fbb111ab565e9f135938f694b44d
font_01_sfnt_off00007168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7168 10588 bytes
SHA-256: 4f34da95aa6385c33b97d128652afae7c43e3628915a7a4522d8ce4401bc06a9

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