Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ef5baa283faa6b…

MALICIOUS

PDF

38.2 KB Created: 2020-08-19 04:39:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99d5417a7f52f0ea503a26e721c49aa4 SHA-1: e91c246bea60bab9856a4f5d6375f3bf71fd86db SHA-256: f8ef5baa283faa6b5b8807048c63fc67322f1158151c702a534f78b8d85d59af
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.cc. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com, but one of which is a malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure related to radiography guidelines. The presence of a download button heuristic further supports a malicious workflow.

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=fgdp+uk+radiography+guidelines In PDF document text
    • http://xopena.lift4life.com/uploads/1/3/1/6/131637419/badiwetuto_pufizivam_jiverodavisewe_guvinawuvotideg.pdfIn PDF document text
    • http://files.jacob-richman.com/uploads/1/3/1/4/131438460/945aa13125bc.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/1/0434/1648/6040/files/55689236567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/81194745586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/monegudifezunulafofev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1152/9114/files/lewusozijuvilolip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/50078297661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7211/7141/files/dojufodenumugadigido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0636/9703/files/espao_morto_anatomico_e_fisiologico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2567/0037/files/22350232758.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 2

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_off00005845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5845 5344 bytes
SHA-256: aba01250112c2c74808f3bf3ca97fe27567073baec7a391f906725418acc8607
font_01_sfnt_off00006a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7B 10060 bytes
SHA-256: ceba08c7e23c31bdd4a604a2c5ee55df7b89acf27722f6ea8ad86a3ee1156e17

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