Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceba1cc6c33b6262…

MALICIOUS

PDF

44.8 KB Created: 2020-08-19 04:52:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4508dab2fa0fd79101449013c05f65c SHA-1: fef873195d04f84a2a30554c9ef79ca782651cea SHA-256: ceba1cc6c33b6262e0d763ff7ac275c6afd85bcfb96a98203f6f7fc57a836d3d
202 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or malware distribution attempt. The presence of a 'download button' heuristic further supports the lure mechanism. The primary malicious URL is https://ttraff.com/pify?keyword=sample+interoffice+memo+template, which likely leads to a malicious payload or further redirection. The document body itself is heavily obfuscated and contains embedded URLs, reinforcing the malicious intent.

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.com/pify?keyword=sample+interoffice+memo+template In PDF document text
    • http://gorufi.nationalroadchurchofchrist.org/uploads/1/3/2/8/132814930/jedeton.pdfIn PDF document text
    • http://files.heymarcomusic.com/uploads/1/3/0/8/130874474/siwoviku_lupumusaxemu.pdfIn PDF document text
    • http://files.36madisonavenue.greatwebsitebuilder.com/uploads/1/3/0/7/130739311/94f4e6f86b5.pdfIn PDF document text
    • http://files.monicarayscott.com/uploads/1/3/0/7/130776661/1586154.pdfIn PDF document text
    • http://files.kouturexprice.com/uploads/1/3/0/7/130776500/keruketosuwi-wiwajunu-ruwixuwi.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/1/0429/5458/8316/files/capteur__ultrasons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/printable_rsvp_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5469/2512/files/blank_ncoer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9237/6741/files/diamonds_rihanna_piano_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6854/5441/files/29584242811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5507/7790/files/delamujupikafejaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1672/2344/files/bitdefender_antivirus_plus_full.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_off0000735c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x735C 5084 bytes
SHA-256: 357d2deb4dea6c0b5a4e83e99a3b57c6af2c80c0750a1ad6ff1d0432d538159d
font_01_sfnt_off00008489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8489 9976 bytes
SHA-256: 1a843023eb8f5a885e053627ccbf4894f4be92704c24cd97b0cd2ee5f6886a9a

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