Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8c947e6bb7b0ab6…

MALICIOUS

PDF

34.7 KB Created: 2020-08-28 05:21:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a4610bfcc7d29c02767869afeda1628 SHA-1: 7ddaff179d8bf69a497c10502e4d21e0ecf10984 SHA-256: a8c947e6bb7b0ab6fa3b7e7489696c2ebffe4ad952d4200b0f1ba3a666323383
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. The primary malicious link, https://ttraff.ru/pify?keyword=2007+toyota+tundra+tailgate+parts, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the target keyword and the malicious URL, suggesting a lure to a phishing or malware distribution site.

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=2007+toyota+tundra+tailgate+parts In PDF document text
    • http://turuxob.mgss.com/uploads/1/3/0/7/130739344/dabagadogifovodip.pdfIn PDF document text
    • http://sibes.frenchiesofthecarolinas.com/uploads/1/3/1/6/131606289/752912.pdfIn PDF document text
    • http://files.nwcapitalconnection.com/uploads/1/3/2/3/132303118/0f3f5630f6017db.pdfIn PDF document text
    • http://files.julieclarkbooks.org/uploads/1/3/1/3/131380591/268344.pdfIn PDF document text
    • http://files.northliverpoolteachingschool.org/uploads/1/3/1/4/131437308/4a20ce9d.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/1/0429/9993/9235/files/baidarka_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3038/8642/files/java_game_programming_source_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4325/3406/files/figoleginavamuvef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1778/1927/files/fate_zero_episode_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8852/8035/files/mesuwimurapiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7451/8178/files/mr_coffee_bvmc-_tjx36_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/viwapibefuzikin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/tonibinebejepomunapib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8710/1094/files/fuwoked.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004aa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AA6 5488 bytes
SHA-256: 08afbf0d2d33fd4f4a2087ff9caebbf065a5b3c55cb38c6bf550d0257a46e739
font_01_sfnt_off00005d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D57 9592 bytes
SHA-256: 0315f0ab96b0cd89ec12cbf773c032506fb7ead0ad50a3050555224ca5898971

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