Malicious PDF — malware analysis report

Static analysis result for SHA-256 cec5ba73c3a11abb…

MALICIOUS

PDF

43.1 KB Created: 2020-08-21 15:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99cc44bedeb0b08de7861d863477d878 SHA-1: 84436d11f151c2fcacca93c5e2965feacf8bad49 SHA-256: cec5ba73c3a11abb25151fd4639156c4ff312bea94cb8ee75abfbe36d6e6fa1a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with the primary link directing to a known malicious redirector at 'https://ttraff.com/pify?keyword=format+json+in+postman'. This indicates a phishing or scam attempt designed to lead the user to malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=format+json+in+postman In PDF document text
    • http://files.runningembers.com/uploads/1/3/1/6/131607522/1c29a22b9738.pdfIn PDF document text
    • http://files.billelenbark.net/uploads/1/3/1/1/131164473/kobuvuwufuxeto.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/1/0438/7936/6811/files/50314710689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4519/9767/files/9915366726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1841/8333/files/companion_planting_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5461/1102/files/96887105698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/lixipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/carpenters_close_to_you_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/7492/3169/files/structure_of_amylose_and_amylopectin.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 4

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_off000061f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F2 4964 bytes
SHA-256: c2a80e2f32a3c8b321c15e2674c861c13de714de308e2f0a577ed6e128c28a27
font_01_sfnt_off000072bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72BF 14616 bytes
SHA-256: 83205fa25dd139d1aef0f17d46a221c481831dece1c3f68c4bab13582601c2e5

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