Malicious PDF — malware analysis report

Static analysis result for SHA-256 c266621975f13bc7…

MALICIOUS

PDF

43.7 KB Created: 2020-08-06 21:42:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad2f170d22c5cec71fd341766738a789 SHA-1: 2cf57d3963fc5279d00d0aa14554f3c3cead94b5 SHA-256: c266621975f13bc7f8b944a3a0a11b7a92679536104bbe7588956f72edd18095
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector link to 'ttraff.com'. This indicates a likely phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict. No scripts were extracted, limiting the analysis of specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=cariotipo+pdf+unam
    • http://files.marvinleblanc.com/uploads/1/3/2/6/132695306/wavozolemima-jiwutuxaba.pdf
    • http://files.thegoodsnh.com/uploads/1/3/2/8/132815924/ca90e6ffc7.pdf
    • http://files.istagesydney.com.au/uploads/1/3/1/4/131438059/sowogeke_genuxovetivuze_datefovolipu_dijef.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/51280968594.pdf
    • https://cdn.shopify.com/s/files/1/0428/2230/3911/files/office_mac_product_key.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/6111551223.pdf
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/99380081086.pdf
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/57109884959.pdf
    • https://cdn.shopify.com/s/files/1/0436/0414/8382/files/mipexi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6434/5247/files/2564416252.pdf
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/48085238943.pdf
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/zuwabelawi.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/wezelobaja.pdf
    • https://cdn.shopify.com/s/files/1/0431/1914/9216/files/tutep.pdf
    • https://cdn.shopify.com/s/files/1/0435/1698/5498/files/dark_souls_minecraft_skin.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_off00006ca5.bin
f4a0b2120e32c854ac29c9d5646514565775171579a3470e0cf79ad6f4160e86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA5 4880 bytes
font_01_sfnt_off00007d2d.bin
58dff11d4f702e0b2026abbddeca4590f6f209ee6ecbeaa3f58cf3f434b0e069		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2D 10936 bytes

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