Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea64f43bd4e2610e…

MALICIOUS

PDF

40.2 KB Created: 2020-08-18 13:24:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 166b958baa14f87dd38c938db55aac8a SHA-1: 4bca6cf225bd2f4df1d694e412ddb66e44fbbd69 SHA-256: ea64f43bd4e2610e8d136417ab0b02db76a205b960ff220f36d79edde5b204a1
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-Override T1059.001 PowerShell

The PDF contains a mass external link farm, with multiple links pointing to shopify.com domains hosting PDF files, and a critical redirector link to ttraff.cc. The presence of a visual download button lure further supports a malicious intent to redirect users to potentially harmful content. The primary malicious IOC is the redirector URL, which is likely used to obscure the final destination of the payload.

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.cc/pify?keyword=bible+yoruba+pdf
    • http://files.harrylevensteinpottery.com/uploads/1/3/2/7/132740873/6454192.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2741/files/atomic_mass_periodic_table.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/lawemosemegatatevubixeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3359516262.pdf
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/remajebewigajezupuxi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/9037317801.pdf
    • https://cdn.shopify.com/s/files/1/0452/7934/6850/files/bank_exams_today_english.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lurexemip.pdf
    • https://cdn.shopify.com/s/files/1/0437/7785/1550/files/2004_yamaha_road_star_1700_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/9882929284.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuwunojipodaga.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5130/files/sutepalakuzibujagexa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051ba.bin
882c2098fff9f9569588308989663f0c48743999f42f2dde2a0889a917b3191f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51BA 4844 bytes
font_01_sfnt_off00006240.bin
86f6d9087cab016bfe79e6feb581b9e0e1eab8838aab44095102b9cfb1a612fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6240 10612 bytes
font_02_sfnt_off00008671.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8671 4324 bytes

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