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)
MD5: b4508dab2fa0fd79101449013c05f65c SHA-1: fef873195d04f84a2a30554c9ef79ca782651cea SHA-256: ceba1cc6c33b6262e0d763ff7ac275c6afd85bcfb96a98203f6f7fc57a836d3d
128 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.

Heuristics 4

  • 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.
  • 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
  • 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
    • http://gorufi.nationalroadchurchofchrist.org/uploads/1/3/2/8/132814930/jedeton.pdf
    • http://files.heymarcomusic.com/uploads/1/3/0/8/130874474/siwoviku_lupumusaxemu.pdf
    • http://files.36madisonavenue.greatwebsitebuilder.com/uploads/1/3/0/7/130739311/94f4e6f86b5.pdf
    • http://files.monicarayscott.com/uploads/1/3/0/7/130776661/1586154.pdf
    • http://files.kouturexprice.com/uploads/1/3/0/7/130776500/keruketosuwi-wiwajunu-ruwixuwi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/capteur__ultrasons.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/printable_rsvp_template.pdf
    • https://cdn.shopify.com/s/files/1/0438/5469/2512/files/blank_ncoer.pdf
    • https://cdn.shopify.com/s/files/1/0434/9237/6741/files/diamonds_rihanna_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/6854/5441/files/29584242811.pdf
    • https://cdn.shopify.com/s/files/1/0437/5507/7790/files/delamujupikafejaz.pdf
    • https://cdn.shopify.com/s/files/1/0439/1672/2344/files/bitdefender_antivirus_plus_full.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000735c.bin
357d2deb4dea6c0b5a4e83e99a3b57c6af2c80c0750a1ad6ff1d0432d538159d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x735C 5084 bytes
font_01_sfnt_off00008489.bin
1a843023eb8f5a885e053627ccbf4894f4be92704c24cd97b0cd2ee5f6886a9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8489 9976 bytes

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