Malicious PDF — malware analysis report

Static analysis result for SHA-256 b74d25d0186ea527…

MALICIOUS

PDF

39.8 KB Created: 2020-08-08 03:07:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf3c26a60173fc6da35f61f13deeb255 SHA-1: 2b2a788982143b2289ba113ce71c9691d241dc64 SHA-256: b74d25d0186ea5271d0ecf50d5ec7df5f6ec35f6a8d3301d3de87983cb50fae0
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. Heuristics indicate a 'Browser extension / update installation lure' and a 'Visual download / call-to-action button lure', suggesting a social engineering attempt to trick the user into downloading malicious content or visiting a phishing site. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.com/pify?keyword=holy+bible+kjv+pdf+download In PDF document text
    • http://files.50walks.com/uploads/1/3/1/3/131380720/6463316.pdfIn PDF document text
    • http://laviri.barmillscommunitychurch.org/uploads/1/3/1/3/131384169/d76f72d624.pdfIn PDF document text
    • http://files.creatingyourwellness.org/uploads/1/3/2/7/132740682/juwuk.pdfIn PDF document text
    • http://files.paterpaulus.us/uploads/1/3/0/8/130873791/taxutef.pdfIn PDF document text
    • http://files.detailexpressutah.com/uploads/1/3/2/6/132681690/vimenafabiburo-nabadori-fopun-baned.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/1/0437/3364/7509/files/1141107677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7285/5967/files/36002836287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6962/7799/files/game_of_thrones_season_1_complete_720p.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/12628455520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4254/4533/files/ganejuronuwonewafatasata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/pigix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1436/4059/files/63208011563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1336/4121/files/que_son_los_alcanos_alquenos_y_alquinos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/8321013720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2395/6125/files/43087154089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3144/3094/files/banulijelixozataguzusivub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4729/4875/files/levobumadazizew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1564/3041/files/18187601230.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
🗂 Part of campaign: highmarkcompanies.com 4 samples

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_off00005135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5135 5256 bytes
SHA-256: 241576261eb929e2bfa00df8da34d7e2893ca933a6216a8bb0927e6edf0d5dc3
font_01_sfnt_off00006342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6342 4720 bytes
SHA-256: 5bc7d7f50c86f604e63abf97ee274c3a3c93e2206f8c46862a867119ebae2ce2
font_02_sfnt_off00007045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7045 9800 bytes
SHA-256: fbd2186ba9c5a1be1719c662beec4faaba67e5030087aa9e964f846c0a4b889a

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