Malicious PDF — malware analysis report

Static analysis result for SHA-256 eceeec2bd75c9922…

MALICIOUS

PDF

59.2 KB Created: 2020-09-10 22:31:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2bfc6316e8b4b4194f265ab4078f254d SHA-1: 52a2cacc448af400688449af3d0a993e3144780e SHA-256: eceeec2bd75c9922968231e8e57b7958991810b342dcb2c07718f574bcad2812
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.link, which is likely used to obscure the final destination. The document body, though heavily obfuscated, contains the keyword 'veterinary+icu+flow+sheet' which matches the parameter in the malicious URL, suggesting a lure. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports malicious intent.

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.link/wix?keyword=veterinary+icu+flow+sheet In PDF document text
    • http://lolub.cherrybloomclothing.co.uk/uploads/1/3/1/6/131636725/dajutav_panesilatuga.pdfIn PDF document text
    • http://werakunu.otogroup.nz/uploads/1/3/1/6/131637136/9187433.pdfIn PDF document text
    • http://files.leaderproject.com/uploads/1/3/0/7/130740517/riwamuradovabud-jepusikabo-xagelapavapa.pdfIn PDF document text
    • http://korozimot.havinetvzw.com/uploads/1/3/0/7/130776078/ea39a17d87f2e63.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/136d3d_8b08ac35b6c947dba160e15c844643bf.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/11f207_425b248615fa4243aac66119b24c648b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8aba0c_037910dae7904ffa8138758eb1e42559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/lametamidefun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0325/4683/files/code_vein_builds_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5666/8573/files/luwol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9655/5168/files/dugamajiwatigosasuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4817/2710/files/sazut.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_off0000aa25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA25 5128 bytes
SHA-256: 94a83665fdc2f4cf600bdd6bbb9698cb6eb401d7cd4221581c308c982db5e2f6
font_01_sfnt_off0000bbaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBAF 10668 bytes
SHA-256: 8192f11ba002d25623de8ba5e7944dbaef902840c54b6258ff79f85f39ef18fa

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