Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfc4cadeb7a936ef…

MALICIOUS

PDF

74.8 KB Created: 2020-08-30 04:53:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d83803a92197b50e2b14f63c94f3bc1 SHA-1: fbdc8c04c7741af3bd88490f2487a77df6b4afe5 SHA-256: cfc4cadeb7a936ef2d05bd9efe3dc89e3e953eb5f69202c6e09956e30194814d
160 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is used to direct users to scam websites. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates that the document's content is designed to trick users into paying money by promising a prize or lottery winnings. The PDF also hosts a large number of links, many pointing to Shopify, likely as part of a link farm to improve search engine ranking for scam-related keywords.

Heuristics 4

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=looney+tunes+dvd+wiki
    • https://cdn.shopify.com/s/files/1/0436/7246/9669/files/19863237104.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8593/files/rididobisuxugoliba.pdf
    • https://cdn.shopify.com/s/files/1/0434/8136/6693/files/19979014253.pdf
    • https://cdn.shopify.com/s/files/1/0428/3842/5767/files/loserevudilofejoxunagixok.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/fisuzigolimivi.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_5be10f665e084b0d9fefa72567d8f147.pdf
    • https://static.usrfiles.com/ugd/b8c837_08b91a96f3c442e09092f9c64505cbca.pdf
    • https://static.usrfiles.com/ugd/824332_179f37da3ff94df5858b1758e8859304.pdf
    • https://static.usrfiles.com/ugd/2ac701_9a6e7353e37d4a688d3fd8276f0cf938.pdf
    • https://static.usrfiles.com/ugd/b8c837_529951ec6117469db58261daf5e5997e.pdf
    • https://cdn.shopify.com/s/files/1/0437/7876/9045/files/biostatistics_course_description.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8246/files/xupefiri.pdf
    • https://cdn.shopify.com/s/files/1/0431/3723/7146/files/83392374307.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9259/files/bushido_the_warrior_s_code.pdf
    • https://cdn.shopify.com/s/files/1/0429/8476/7641/files/24188683313.pdf
    • https://cdn.shopify.com/s/files/1/0440/0336/0926/files/zoho_aptitude_questions_with_answers_download.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_off0000dd01.bin
ea8d803aa35d36ce29186f16eb44fca966c925daa412bf6a99615b61cfdb8b60
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD01 4740 bytes
font_01_sfnt_off0000ed5c.bin
afdab1dc31d9f5d35e0f72ae07eab556b0a8bb4a8251ad9e76fc346926c7f18b
pdf-font-stream PDF embedded font (sfnt) at offset 0xED5C 15620 bytes