Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f9645480e563dc…

MALICIOUS

PDF

47.9 KB Created: 2020-08-04 06:22:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c22825a9ec5993315a51637c391653f SHA-1: 66be6b4682500ce3a37b8f3d12d33e513e2f4d55 SHA-256: 98f9645480e563dc32859cfbb1ed7d27b29db51bc48c0208feb131a34d0d89b9
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with the primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=soal+olimpiade+guru+biologi+sma+pdf', suggesting a lure related to academic materials to entice clicks. No scripts were extracted from this sample.

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=soal+olimpiade+guru+biologi+sma+pdf
    • http://files.schec.net/uploads/1/3/1/8/131871894/6851944.pdf
    • http://files.thedadventurist.com/uploads/1/3/0/8/130814676/mezuxego.pdf
    • http://files.theplanningplaceevents.com/uploads/1/3/1/6/131636984/mudira_zolotetowuta.pdf
    • http://files.rhpulleydesign.com/uploads/1/3/2/8/132814030/6256749.pdf
    • http://files.thegreedycouple.com/uploads/1/3/0/7/130738988/33975.pdf
    • https://cdn.shopify.com/s/files/1/0432/2331/8686/files/952332676.pdf
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/24274566026.pdf
    • https://cdn.shopify.com/s/files/1/0434/0183/8757/files/23736684892.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/koxasavedobibezab.pdf
    • https://cdn.shopify.com/s/files/1/0433/8309/5459/files/pubejegilani.pdf
    • https://cdn.shopify.com/s/files/1/0436/2131/8818/files/gifiruwareku.pdf
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/can_t_edit_hosts_file.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/43059886376.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/paxasedivulijuvunirerola.pdf
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/76808594398.pdf
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/44500105055.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niwaragevutaxesidep.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_off00007d1f.bin
d6a9518fa20665d17785f5ab91b8567cbf6048bb4a37d776c3bbb212e8af47e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1F 5604 bytes
font_01_sfnt_off00009009.bin
6f315914426a99fda49604345d5be7adc0b79a9f12bfd18448ee0b8f288226f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9009 10128 bytes

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