Malicious PDF — malware analysis report

Static analysis result for SHA-256 b41cc7d84a76db4e…

MALICIOUS

PDF

43.3 KB Created: 2020-08-10 20:55:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 50fb1e2a912fd7d78ff569afee3d56ae SHA-1: f3393734c53b48b7e6df4e5cda41fb1a4c3ed950 SHA-256: b41cc7d84a76db4eebb59eb6327704baa3f32149f326f5cc2fc90a7e7f3e055f
194 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to a known malicious redirector, ttraff.ru. The document body, though heavily obfuscated, includes the same URL and references 'buzzed game cards pdf', suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the malicious redirector. No scripts were extracted from this sample.

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=buzzed+game+cards+pdf In PDF document text
    • http://jejimutu.literacy-initiative.org/uploads/1/3/1/3/131398020/ce7f46e.pdfIn PDF document text
    • http://files.townsend-rogers.org/uploads/1/3/1/3/131384025/joxetopelepuwul_zedexefameveru_vefipenekanefo.pdfIn PDF document text
    • http://files.rickwoodwriter.com/uploads/1/3/0/8/130814636/leporimifojejif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/30577344250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0979/4463/files/66858570523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0670/5316/files/buboresarijubelakezupaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0525/5577/files/lobebatunemoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7054/6329/files/byte_of_python_swaroop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6243/5739/files/4984771261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9831/6707/files/56596342686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8908/2006/files/ridipisisuropi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4933/6483/files/kawesizab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8478/3509/files/xaxelonuvunowefifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0056/0803/files/siluxogutiwobojezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8077/7882/files/nufapalurimaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/zojagopedutibitawak.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_off00005c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C65 5080 bytes
SHA-256: 7e2622b847b0b5e6dd558e18b8e33454c46dca91ea842b505925410aee4b92ca
font_01_sfnt_off00006db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB5 10816 bytes
SHA-256: 86fb39764d89e6c82b2ec4c003b2088c2ddeb38a3c67765db209ed61be5088cd
font_02_sfnt_off0000926d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x926D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3