Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c853a810704e29b…

MALICIOUS

PDF

47.7 KB Created: 2020-07-29 11:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8236b26a3f20192f65eda9f1c4073188 SHA-1: 7aa30366780547079ddde8f8a8a4de757400fc2e SHA-256: 8c853a810704e29b0dbdb4bbafe4035f890e395fde160dd28ba3f551fecabe51
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link and a link farm, indicating an attempt to direct users to potentially harmful websites. The document body, though heavily obfuscated, suggests a lure related to 'cancer information in gujarati pdf'. The primary malicious IOC is the redirector URL, which is likely used to funnel traffic to further malicious destinations.

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.ru/pify?keyword=cancer+information+in+gujarati+pdf
    • http://files.maryhvance.com/uploads/1/3/1/3/131383743/b450c9.pdf
    • http://files.artifexhomesolutions.com/uploads/1/3/1/8/131856318/lokov_zudinalotaxitop_bofidaf.pdf
    • http://files.leavingtheninetynine.org/uploads/1/3/0/9/130969695/rimos.pdf
    • http://files.seattlemobiletinting.com/uploads/1/3/0/8/130813132/7470819.pdf
    • https://cdn.shopify.com/s/files/1/0432/0935/9520/files/mevuxubaxozerijiranumubu.pdf
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/kodaxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9286/9281/files/fozemijonijonibereko.pdf
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/12215243909.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/gilixegifokevimezawa.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5829/files/kogufinisi.pdf
    • https://cdn.shopify.com/s/files/1/0439/3887/3512/files/wuzalumosuviguvi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/lijoziwonaluburomi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1224/4134/files/92891889523.pdf
    • https://cdn.shopify.com/s/files/1/0428/1014/6983/files/zubukovugosadisiliruda.pdf
    • https://cdn.shopify.com/s/files/1/0428/4642/1158/files/34954661816.pdf
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/86511440649.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/tupesizisokupolexotuxe.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_off00007d0e.bin
38e12c5ca4d1e841165a7acb973d90f401074982b99930c3212d22570f7ec97e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0E 5248 bytes
font_01_sfnt_off00008ed5.bin
3041a8b9fe218d5f2f3e7a3c3831cc8a7eeef4932e7e20c94c36ef8066f75462		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED5 10080 bytes

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