Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce97bb8d545915ab…

MALICIOUS

PDF

62.0 KB Created: 2020-07-31 11:32:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 832ab51f5981a09b825837acae7c5e71 SHA-1: e01fcf88d94149a22155ec07ac111adedd22f35f SHA-256: ce97bb8d545915ab157bd9be4aade94f26764d839329bd55b712a2bdfd4c8d91
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits a PDF link farm heuristic, with numerous links pointing to Shopify-hosted PDFs, likely for SEO manipulation to attract victims. The document body is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf.

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.cc/pify?keyword=mcq+on+cardiovascular+system+physiology+pdf In PDF document text
    • http://files.urinalvinyl.com/uploads/1/3/1/1/131164159/gazipibis_xanazumul_lupezixi.pdfIn PDF document text
    • http://files.xplicator.info/uploads/1/3/1/3/131381607/3324202.pdfIn PDF document text
    • http://files.haddowphoto.com/uploads/1/3/0/8/130813325/15d873633993fc.pdfIn PDF document text
    • http://files.interactivedrawingtherapy.org/uploads/1/3/1/4/131438046/vusaluderunuvele.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/1/0431/3595/9191/files/mosemafovadixad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1197/3026/files/zabanovebebabulevusup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6408/files/vepuzokimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/zotifeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/89720828413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinavupomun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/65891483728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3455/0177/files/74016578961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1638/0831/files/mebuved.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1951/5557/files/18964909455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9066/4860/files/zurajakilori.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_off0000b38c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB38C 5744 bytes
SHA-256: 447e7f44c63796e0ec6d5f301055f71c793b27e3a133a14f57e0b24c86d095e3
font_01_sfnt_off0000c6f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F4 10452 bytes
SHA-256: af32e767c6ba5373dba06786709fad5f050a89b384d409915597a89ba5dc0de7

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