Malicious PDF — malware analysis report

Static analysis result for SHA-256 055a719fca7afab4…

MALICIOUS

PDF

47.3 KB Created: 2020-08-30 16:08:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a5323137ab4ecb8599cc4c542412a13e SHA-1: 790a44493f0191364458726d0c84f75b27d51f16 SHA-256: 055a719fca7afab41bdbc97f7c16d4e0cbf74b8ab391af5fb90c910d888c550b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to Shopify domains hosting PDF files, likely as part of an SEO link farm. A critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is also present in the document body. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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/wix?keyword=way+over+yonder+in+the+minor+key In 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/1/0428/1335/8247/files/minimalism_documentary_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2956/9434/files/aspects_score_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8624/1189/files/koges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0734/3779/files/3192042981.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/314c35_807cd44e4cf9454eb3ca9692451f73d5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_4b28dbd51aa849438d16c2af0ff31a96.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_ca7bd45308a040af9b29010b968ec1ce.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_14492a5b817b407e9619eeece6462cb9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_08e756bc544b49d0911562dc1fd8912a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e5cbe5_6e8c55a883c54e5b8abbea2baa192fc7.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 1

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_off00005233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5233 13008 bytes
SHA-256: 7b41c92fa54ffeca6b9d74067f38a075e9a34456e314152d95468cccfb3068d2
font_01_sfnt_off00007c20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C20 5096 bytes
SHA-256: f461ce2a1e565ebee4b87189aa16d1ada1c9a56aea76d4c94a4d25c7209ebc37
font_02_sfnt_off00008d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D55 10300 bytes
SHA-256: 89bde2d462d0ae045b094b7b1410aa308c64285ad3e5da9845646934e3afe3c2

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