Malicious PDF — malware analysis report

Static analysis result for SHA-256 c57c6a97aa34f6e0…

MALICIOUS

PDF

40.4 KB Created: 2020-07-24 10:55:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c48e6d2219f33305ecfae1166b65a63f SHA-1: f3b2d3bda921c9653b83fed8c68651c7aeb3980f SHA-256: c57c6a97aa34f6e0295894bf60c1652262d232a17c2ad9b4860f294eaea25ddb
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a movie download. The link points to 'ttraff.ru', which is known for malicious redirection. The document body, though heavily obfuscated, contains text related to a movie title, reinforcing the lure. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=challenge+bengali+full+movie+hd+free
    • http://files.owyheeoffroadchallenge.com/uploads/1/3/2/7/132740659/8414697.pdf
    • http://files.caribbeancare.org/uploads/1/3/2/6/132681885/zezofanujuk.pdf
    • http://files.thevigilgroup.org.uk/uploads/1/3/0/7/130776215/bekujeradunenonodus.pdf
    • http://files.thevigilgroup.org
    • https://cdn.shopify.com/s/files/1/0431/1590/5185/files/fulefepovevokomipidi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/bogimujanaxadadiwuvomive.pdf
    • https://cdn.shopify.com/s/files/1/0432/9757/0980/files/xinugumijobameges.pdf
    • https://cdn.shopify.com/s/files/1/0436/6876/6873/files/lololavoromowobi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0805/6740/files/kadupemawevolukozegejaje.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/295303349.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/novorubafiwani.pdf
    • https://cdn.shopify.com/s/files/1/0432/1722/3840/files/78672469915.pdf
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/97845933360.pdf
    • https://cdn.shopify.com/s/files/1/0433/1605/2123/files/wanudusuxezonukejuduf.pdf
    • https://cdn.shopify.com/s/files/1/0430/4322/5751/files/57722293675.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wajomuxufukurojudi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5098/2805/files/bamavijule.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_off0000616e.bin
70e09ac1e270f44642712f30a304b1fc1dd4c342e7c3ec1786cd3f29d4bb14cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x616E 5168 bytes
font_01_sfnt_off000072d1.bin
42f7eed0e3219f3a7c9d3667f71bfdeb834864f3b1ef73c83668d2a7099027ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72D1 9816 bytes

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