Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ace585964b7af6…

MALICIOUS

PDF

44.7 KB Created: 2020-07-29 20:06:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c94facbf7f162c82c2bc7e1deaae2e1 SHA-1: 102b190811fe14201b6a7cc98e042b4c2e9265a1 SHA-256: c0ace585964b7af6122af4167488610e2cd7c52eae48a3c329365b421a217587
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic indicates these links are part of a malicious redirector infrastructure, specifically `https://ttraff.cc/pify?keyword=college+panda+writing+pdf`. Another heuristic identifies a PDF link farm, suggesting the document's primary purpose is to drive traffic to numerous external sites, likely for malicious purposes such as phishing or malware distribution.

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.cc/pify?keyword=college+panda+writing+pdf
    • http://files.awardexpressph.com/uploads/1/3/1/4/131409597/lemil.pdf
    • http://files.cashmerehighlibrary.com/uploads/1/3/1/4/131437380/fadimale.pdf
    • http://files.niagaracentrendp.ca/uploads/1/3/1/8/131871659/xolewotizamukin.pdf
    • http://files.jamstheatrecompany.com/uploads/1/3/1/8/131871705/faxukolomipujenatoje.pdf
    • http://files.latinahilara.com/uploads/1/3/1/1/131163969/6585841.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/41471781868.pdf
    • https://cdn.shopify.com/s/files/1/0438/0209/9873/files/4716732765.pdf
    • https://cdn.shopify.com/s/files/1/0437/1585/4490/files/22670921270.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/44609186417.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/padimonopusilumabedesi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2283550224.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nenixuraxolitater.pdf
    • https://cdn.shopify.com/s/files/1/0429/4233/3087/files/raduwibagutitezub.pdf
    • https://cdn.shopify.com/s/files/1/0432/1574/9281/files/25089092283.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_off000072f3.bin
62ab0d7e502f739a7ab9e814e83c1be15b0bade98218cfcce0e71f47db8543b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F3 4936 bytes
font_01_sfnt_off000083e3.bin
806b31ad3a458f98b3349488c4908f1d9d7a48eeebdfb1a7cfa3f25b354965a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83E3 9968 bytes

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