Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb619fbfbd104fa…

MALICIOUS

PDF

39.4 KB Created: 2020-08-29 14:17:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d01cb63d49e548944762a7a4ff086d8 SHA-1: 1b1cf75030105d1c77f2abc79eae0b11f8280194 SHA-256: ccb619fbfbd104fa58490a7c7c8f8eebfe8cca2132cf45460e229abf111cc63e
150 Risk Score

Malware Insights

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

The PDF contains a direct link to a known malicious redirector, ttraff.ru, which is disguised as a search result for a "Pes 2016 serial key". This indicates a social engineering lure to drive traffic to malicious infrastructure. The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. No scripts were extracted from this sample.

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/wix?keyword=pes+2016+serial+key
    • https://cdn.shopify.com/s/files/1/0434/6642/4477/files/42881282023.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedapefe.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/82365053204.pdf
    • https://cdn.shopify.com/s/files/1/0428/8777/4374/files/17737557542.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/attitude_magazine_thailand_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6080/5280/files/43729863236.pdf
    • https://static.usrfiles.com/ugd/b8c837_4912825f01514350b65ddd54cb9076a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_d2ea90ecca954ddb8538d840114365d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_90b2679dda514e2cb9f5f48a52fb994b.pdf
    • https://static.usrfiles.com/ugd/b8c837_5915ebbfb8bb455f8e6a356e97e78d53.pdf
    • https://static.usrfiles.com/ugd/b8c837_5af3bcc9bb83454fb45073e466a9a5d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc438509ef674caf95ed813883331695.pdf
    • https://static.usrfiles.com/ugd/cf14a4_21ae83ec773a4a1ab14ab3eed2733395.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_off00005bf2.bin
1faffb2c384df305df069067d3c45c87d3d1dc1b02a9a5f74aa3e2e22d343b5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF2 5328 bytes
font_01_sfnt_off00006e29.bin
02f17dd5b9f05afd018bde40c7b6b71dd0b7dd1f29ffde440884c7369bc593ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E29 10292 bytes

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