Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a2cd3c7b1d678c6…

MALICIOUS

PDF

44.4 KB Created: 2020-08-11 20:13:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 574cfd61b984dae1fc090b91bd609b57 SHA-1: 3f96e1d42f1ed1b90e5e3e6be61e7d5aa7522b0f SHA-256: 9a2cd3c7b1d678c68a19f101c761b5bf4545e0b2f8e4e87a378683dd4bfc1573
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to manipulate search engine results or distribute malicious content. The presence of the malicious redirector URL https://ttraff.cc/pify?keyword=ripple+tank+experiment+pdf further supports the malicious intent.

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.cc/pify?keyword=ripple+tank+experiment+pdf In PDF document text
    • http://files.beautifultendings.com/uploads/1/3/1/8/131856330/rubabowimisidumixenu.pdfIn PDF document text
    • http://files.laurenfalksoprano.com/uploads/1/3/2/7/132740564/c1252f5a559a0.pdfIn PDF document text
    • http://files.tradbowmt.org/uploads/1/3/1/4/131452997/lizakoneleneraji.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/1/0431/2272/0922/files/85846997755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7660/7390/files/d_d_5e_changeling.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0775/3888/files/12102744348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1341/2760/files/81081047644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2171/4079/files/sosopesuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/19576843295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6170/5888/files/wegoxujek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9635/0624/files/41828572226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/daminawixatenekitufob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3178/1791/files/majafonoroxemudor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/52972983819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9688/1814/files/gexafitetevuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9535/0684/files/61701964516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/fidelu.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 4

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_off00007197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7197 5148 bytes
SHA-256: 17379abdbd8ca16646c92e12424c5de796ef6249ea6012ba83d6360a99ac0064
font_01_sfnt_off00008308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8308 9952 bytes
SHA-256: 7d531edc8b8a8c6ce9153123b21d5b0e240e8ec0738bda5804536d43d60cae19

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