Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c84ebcf89b15a89…

MALICIOUS

PDF

36.2 KB Created: 2020-08-06 17:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b55c52192bcaedb01816d74840c5a811 SHA-1: fc2e2ef2b1d7a31d31b2dc3c0c96e3d5441f95e8 SHA-256: 5c84ebcf89b15a89bfd4a98d4b5b4e1ec163d8a13cd581414a35e4557686d027
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body and heuristics indicate a lure for a 'free PDF download', which is a common phishing tactic. 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.cc/pify?keyword=asana+pranayama+mudra+bandha+espa%25C3%25B1ol+pdf+gratis In PDF document text
    • http://files.blazingblazers.com/uploads/1/3/1/4/131437064/bf8fa5a2a3e8.pdfIn PDF document text
    • http://files.paulparishcouncil.org/uploads/1/3/1/3/131380915/vosaga-vagadotoxidow-vesegibibofava-ritivu.pdfIn PDF document text
    • http://files.mrstaylor-lc.com/uploads/1/3/1/4/131438044/rusekopitaxezu.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/1/0432/7538/7043/files/66284465807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/bomewowelivomapoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/7730738641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0886/8001/files/mofezet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2181/1362/files/porawibixupadowidaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kosetomamevisired.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/demesudixagivok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8106/3838/files/66123851821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/73413798825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0088/7457/files/zuvivanugulopeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4310/2613/files/sivolop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9255/7467/files/bunuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7086/4025/files/moludemazufigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/bcg_matrix.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_off00004a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A30 5896 bytes
SHA-256: d70412be5fc89d906d3bd126be892e18bc951f373a043fd57f9f0e1c5cd04494
font_01_sfnt_off00005ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDF 10568 bytes
SHA-256: eec9f1986a5c92057d830410be266a3fa8072cd9cff5ff715d76fdbe46151038

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