Malicious PDF — malware analysis report

Static analysis result for SHA-256 a741d15c598a8fda…

MALICIOUS

PDF

43.3 KB Created: 2020-08-11 09:13:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dbf0b96cdd61490e14be800541549c57 SHA-1: 46c5d3fed7b2430b49c47b4fd01d91330f9f53f3 SHA-256: a741d15c598a8fda51da9c6bbf460cadac018681547ecdfd1da1e54d7ef00831
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body also contains this URL, along with numerous other links to external PDFs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be a link farm designed to redirect users to 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=kia+sedona+2020+pdf In PDF document text
    • http://boxewi.lafta.org/uploads/1/3/2/6/132681352/relufe.pdfIn PDF document text
    • http://files.rockiesparish.com/uploads/1/3/1/8/131871864/983316.pdfIn PDF document text
    • http://files.vivi-design-studio.com/uploads/1/3/1/4/131406114/nikuk-monedonogama.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/1/0430/5921/6533/files/67990148005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/86274622950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/beowulf_graphic_novel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8969/files/linear_and_nonlinear_functional_analysis_with_applications_ciarlet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72518400380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0026/5878/files/85589629240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fiwowosilikaragufes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/medarovadujagowurevasote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/ginobajikobufin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/wedojegusatotukariwipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/wiwafig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5536/3734/files/beautifulsoup_return_nth_td.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3390/3783/files/78457137907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3714/5753/files/mojadabowo.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
🗂 Part of campaign: aquabydesign.co.uk 6 samples

Related samples 3

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_off00006ac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC9 5148 bytes
SHA-256: 7fbe1258a7e569aaab4458ccf5fac02280411f07907bc607ae38843b1e9f1fe7
font_01_sfnt_off00007c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C68 11112 bytes
SHA-256: 010566a75d47ed0566eb11d55994657dd85362cb3ca8eac4d57615ecbfd5e992

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