Malicious PDF — malware analysis report

Static analysis result for SHA-256 06512fbcdca0ca85…

MALICIOUS

PDF

61.7 KB Created: 2020-08-06 06:26:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc8d0cf9802cdf8a58c34d05e9edb3fa SHA-1: 3211a6c8264623c07ccceef8e72b499ae79b0084 SHA-256: 06512fbcdca0ca85bc0335ba1914eb69ae634628a6580978b494d47256fb9a31
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, many of which point to a redirector service (ttraff.com). The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of a malicious redirector link and a large number of external PDF links indicates a phishing or scam attempt, likely designed to lead users to malicious content or further phishing pages. The ML classifier strongly supports the malicious verdict.

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=cestodes+and+trematodes+pdf In PDF document text
    • http://files.inharmonymontclair.org/uploads/1/3/1/3/131379213/5530379.pdfIn PDF document text
    • http://files.beautifulroomsinluton.co.uk/uploads/1/3/0/7/130740504/1514287.pdfIn PDF document text
    • http://files.stator-creative.com/uploads/1/3/2/6/132696465/8e2f2f5e.pdfIn PDF document text
    • http://files.cbakerpaintings.com/uploads/1/3/0/7/130739344/laperolarojavuv-tijitagidid.pdfIn PDF document text
    • http://doritudek.onsighteyecare.co.uk/uploads/1/3/1/4/131406592/polasa-sogutusotik-xotirozifolutur-zomurasuduvos.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/1/0435/5702/8001/files/lightning_thief_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0200/2584/files/6920847556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9593/2574/files/zikitetijakepilexawetizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1517/2259/files/administrao_de_varejo_para_pequenas_e_mdias_empresas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/kotona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4574/6838/files/97696557580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5079/files/16097976462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/15311899372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6640/8603/files/24213680657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/98616614784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/juzevo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a3cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3CB 5060 bytes
SHA-256: 75307725df7bb0749f0e3da798874336595a78fa7a99f7958258d7dd46dfe86c
font_01_sfnt_off0000b4dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4DD 1716 bytes
SHA-256: 7775e8e7c4329a1c5bd112c001158d8940360085fc48f9208aadc231de0e3d90
font_02_sfnt_off0000bd84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD84 14148 bytes
SHA-256: 0c470b3e9f24fd0c2f1309ef337e45e103caf7867667dd478ec4fe8f0df6d5f3

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