Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d1cb031e53af666…

MALICIOUS

PDF

43.6 KB Created: 2020-08-18 22:31:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 223d1aea2e2d4822da1b5c2595d47ff5 SHA-1: 0ae517760f0e2eca3f9db9786cd6222f7fb55f52 SHA-256: 9d1cb031e53af6662d38926d17ec99394fe75bc841d1d8c21d9f46e27413ecfd
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as an 'Excel subnet calculator'. This link points to 'ttraff.cc', a known malicious redirector. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to obscure the malicious destination. The presence of a 'download button' heuristic further supports the lure to click the link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=excel+subnet+calculator In PDF document text
    • http://luwaleb.small2big.co.uk/uploads/1/3/1/8/131856158/76de946b2a.pdfIn PDF document text
    • http://files.get-hookedup.net/uploads/1/3/0/8/130874101/056acd985f6d.pdfIn PDF document text
    • http://files.bellydancewalnutcreek.com/uploads/1/3/1/6/131607544/momerazu.pdfIn PDF document text
    • http://files.codamidwest.org/uploads/1/3/0/8/130814101/xafisuz.pdfIn PDF document text
    • http://rajoradub.conniesclassictouch.com/uploads/1/3/0/7/130739206/438062.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/1/0428/2833/3222/files/puzadawumuxeweketomubek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3800/6687/files/71796498652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1092/4437/files/elona_custom_ai.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8747/6389/files/miberupoxutoruzaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0157/6604/files/66617559130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1900/2279/files/javascript_event_listener.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/1788/9960/files/julikedozakamuroruxosono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2696/3865/files/jumumujomudekaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/xawizejoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/bsc_nursing_2nd_year_syllabus_bfuhs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/panirulebimolijapobesa.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 6

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_off00006216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6216 4956 bytes
SHA-256: bffa81321eaac73f373ad0f38a622f73422c14378784097634e91f4527d474ff
font_01_sfnt_off000072f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F7 15012 bytes
SHA-256: cea97394303bd59d122a2cb21233e50309e808dfa22be35d11a4a769d55f4dfe

Open this report in the interactive analyzer, or submit your own file for analysis.