Malicious PDF — malware analysis report

Static analysis result for SHA-256 475c88fb8a48b809…

MALICIOUS

PDF

43.5 KB Created: 2020-08-12 16:22:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 000418259e797ddf33340e06219e0b0c SHA-1: d04eaf438cfcf3c6a24046eb3d225088b91d857f SHA-256: 475c88fb8a48b809603ceeb1a6dea62d7153714922f214df137a6b68382437f3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a tutorial for "Autocad architecture 2020 3d". This indicates a social engineering attempt to lure users to malicious content. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm for SEO poisoning or traffic redirection. No scripts were extracted, but the presence of a malicious redirector and the document's deceptive content strongly suggest a phishing or malware distribution attempt.

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=autocad+architecture+2020+3d+tutorial+pdf In PDF document text
    • http://files.riataliadesigns.com/uploads/1/3/0/7/130776787/6486797.pdfIn PDF document text
    • http://files.robirie.com/uploads/1/3/1/4/131410007/4828545.pdfIn PDF document text
    • http://files.advent-baltimore.com/uploads/1/3/0/7/130738719/6ce43b.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/1/0428/3868/7900/files/54005962308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/velomop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3349/3655/files/22933401766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26443777516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2100/1119/files/41252414583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0622/9654/files/66496508212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/69794362745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3291/9720/files/38279453817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/16653413632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7039/files/jobixemotovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/website_als_chrome.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6106 5268 bytes
SHA-256: 328e3f5c16c35262b5758344c85cfebadb441c6d13a77abdb7169da270df2331
font_01_sfnt_off00007301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7301 9284 bytes
SHA-256: 3c8cfef25d29a88fe30b940b1e75bd566f9ad500f684e69097febdc99b14474b
font_02_sfnt_off000092da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92DA 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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