Malicious PDF — malware analysis report

Static analysis result for SHA-256 f990b5747a5a21cc…

MALICIOUS

PDF

45.8 KB Created: 2020-08-02 02:03:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f103920dec0a1fa421d44dbedab2cc2 SHA-1: b5af096c4db5b8681e80a6f5cfc1b540ea04c6ab SHA-256: f990b5747a5a21cc25c4c962736c66ee642cf5d74a826f3809d60afcdf28d416
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link to 'ttraff.com'. This indicates the document is designed to redirect users to potentially harmful content. The presence of a large number of external PDF links, many pointing to Shopify, suggests an attempt to obscure the final malicious destination or engage in SEO manipulation for phishing.

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.com/pify?keyword=please+check+gdb+is+codesigned In PDF document text
    • http://files.jeffreydscott.com/uploads/1/3/2/7/132711999/6000058.pdfIn PDF document text
    • http://files.zendoway.com/uploads/1/3/1/8/131856646/vabemolut-paxomelopiv.pdfIn PDF document text
    • http://files.abivaonlineresources.com/uploads/1/3/0/8/130813612/fa0ba13b4e.pdfIn PDF document text
    • http://files.overcott.com/uploads/1/3/2/6/132695519/4181826.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/1/0440/3865/2069/files/xitutakosolujenukuzikip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/rojilisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/30342437997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0745/1042/files/50115292367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/xiwisososet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/wodulovivazuxofuxototas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5989/4689/files/24779209132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7478/0312/files/90585400862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/rejaveg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8538/0246/files/wotin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8030/3267/files/rofuluporige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7646/0447/files/64156269914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1969/7303/files/trapping_rain_water_using_stack_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0427/1524/files/73410340769.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69FB 5308 bytes
SHA-256: 8481cec48cd0a66cbf9b3ed79c13f51483bf79c19dd16dd9f48bcbf7f1be97e2
font_01_sfnt_off00007bfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFC 2268 bytes
SHA-256: 72a3fe65f0a21df30f240897224061cfa351088b80a4eb601fb5defb198ec993
font_02_sfnt_off0000860e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x860E 10372 bytes
SHA-256: 5f50b93dbcbc93c5d521c8c9c9a38e7adb26a20f084e53ac72c2f503c76c573c