Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5429885b6535649…

MALICIOUS

PDF

44.1 KB Created: 2020-07-29 12:55:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f7bfdbae13bc1e70e6b9643dbd78708 SHA-1: fd47d6df4d822a56fe27a6660e6221e7515cdc7a SHA-256: d5429885b65356490d2680f3319f309d3bf11fb420ce92a29fc4a5c7568f879c
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL, 'https://ttraff.com/pify?keyword=casting+process+pdf+notes', is flagged as a known malicious redirector. The document body is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document but rather a container for malicious links.

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.com/pify?keyword=casting+process+pdf+notes
    • http://files.elizabethhrand.com/uploads/1/3/0/9/130969254/milelu_vogelubolup_nikudoderas_xelepipikagew.pdf
    • http://files.volusiaschoolcounselors.org/uploads/1/3/1/4/131453559/puvononufuzezekuvuni.pdf
    • http://files.agmakeup.com.au/uploads/1/3/0/8/130874368/9685425.pdf
    • http://files.pianolessonsbyjulie.com/uploads/1/3/1/3/131380868/59baef08.pdf
    • http://files.volusiascho
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/30164217637.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdf
    • https://cdn.shopify.com/s/files/1/0435/0499/2421/files/kifebumubabimagagepudip.pdf
    • https://cdn.shopify.com/s/files/1/0430/4453/6473/files/rezubasexa.pdf
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/81570521768.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/pogevisepunakekakuvena.pdf
    • https://cdn.shopify.com/s/files/1/0438/4145/4240/files/16798745689.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/gusodokoludugavekow.pdf
    • https://cdn.shopify.com/s/files/1/0433/1556/0616/files/mibukojavom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/japoxotoruzub.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6332/files/11426210681.pdf
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/97524395397.pdf
    • https://cdn.shopify.com/s/files/1/0428/8312/1319/files/vexisibasejop.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_off00006fa0.bin
cc3a6bf6602d1e4fd80d16690c4ab06608a8aafef9ed8589a41d754dd53d0c0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA0 5104 bytes
font_01_sfnt_off00008102.bin
4c1f8e944d60138fae6fe45882ec1021e09ef354ae52f432efa9f7ed1cfc8ded		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8102 10220 bytes

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