Malicious PDF — malware analysis report

Static analysis result for SHA-256 c061a2bf7af7a5b0…

MALICIOUS

PDF

41.7 KB Created: 2020-08-25 03:05:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d6a3c377e9508425e1ec8abccfa9b55 SHA-1: 4d647aaa06292d5b5e0db4f9b3f5e0c373e760da SHA-256: c061a2bf7af7a5b0897ba4732b18a41a031cb071a9293f79d15d0bbb67547ffe
128 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple links, with one critical heuristic identifying a malicious redirector link to 'ttraff.com'. The document body and embedded links suggest a lure to download further malicious content. The presence of numerous Shopify links, while mostly benign, is part of a link farm strategy to obscure the malicious redirector.

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=fidic+white+book+guide+pdf
    • http://lojigaz.leadershipembodimentasia.com/uploads/1/3/1/4/131452890/2133481.pdf
    • http://tefomeg.michellebergermd.com/uploads/1/3/2/7/132741009/5f1ac9e672e86c.pdf
    • https://cdn.shopify.com/s/files/1/0430/0429/7375/files/4462688106.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/fabomumoretuvutaxonino.pdf
    • https://cdn.shopify.com/s/files/1/0433/9272/9246/files/39611863508.pdf
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/lisujulotovewalalazew.pdf
    • https://cdn.shopify.com/s/files/1/0435/9825/0146/files/banalata_sen.pdf
    • https://cdn.shopify.com/s/files/1/0431/7793/5004/files/97244872915.pdf
    • https://cdn.shopify.com/s/files/1/0428/5467/8687/files/33838280349.pdf
    • https://cdn.shopify.com/s/files/1/0436/0116/6498/files/32425553915.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/jazofaloluwet.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_off000066d8.bin
d19fa2d0c9eeed280b17592baef1f5313e9f3581d18e6d0ab686924f9543530f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D8 5152 bytes
font_01_sfnt_off00007871.bin
d6eacd3ad95a52f41ed88f2a53f427c996b17824e63756698d01bc0e83f29c23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7871 9964 bytes

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