Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1d5bcee0ec78d58…

MALICIOUS

PDF

39.9 KB Created: 2020-08-12 06:58:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db6a087132205a7d1698bb02c5f405d8 SHA-1: ecf93186ae2ac6eee857777e8d47e78de9ca259d SHA-256: b1d5bcee0ec78d58c1a4b2bbad1aeba6b6d80974d9d8356e26c9eec2e64f45c7
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, forming a link farm. One of these links directs to a known malicious redirector, ttraff.com, which likely serves as a gateway to further malicious content. The ML classifier strongly indicated maliciousness, and the presence of a link farm and redirector suggests a phishing or malware distribution attempt.

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.com/pify?keyword=our+father+in+heaven+bethel+chords+pdf In PDF document text
    • http://files.kevankruger.com/uploads/1/3/1/8/131856771/6bfd43cdd3f1bce.pdfIn PDF document text
    • http://mefikur.wlu-science-chem-halabadleh.ca/uploads/1/3/1/4/131407995/db8fa8831.pdfIn PDF document text
    • http://files.dutchysmini.com/uploads/1/3/0/8/130813881/fokomudekekunenep.pdfIn PDF document text
    • http://kepelal.inspectordeanjones.com/uploads/1/3/0/7/130738748/vafoxofagevavigokove.pdfIn PDF document text
    • http://files.369k.org/uploads/1/3/1/6/131637255/simominixuleg_vonutiroperenuv.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/1/0432/2587/4600/files/61917398662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2737/1931/files/dopikegamarimegidugumali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9003/5366/files/defulezenajuwokapeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5286/7494/files/remiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70998441087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6871/1321/files/wubusitagozurabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51982080438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5953/files/75236243855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2692/2146/files/funniest_political_pictures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7660/files/tabonitunegaseferifeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/ninozogenepasufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2772/5474/files/76985340639.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 3

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_off000052ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52ED 5468 bytes
SHA-256: 01fb16ad49336d024172509f4611543714762ed2268ac6cda7cf4a294db320f7
font_01_sfnt_off0000657e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657E 14532 bytes
SHA-256: f69eb110e979381ff8ee85ada76634e4ff78c49d45e3f9fb81da8988eb5b8856

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