Malicious PDF — malware analysis report

Static analysis result for SHA-256 8deef47bea41958a…

MALICIOUS

PDF

62.6 KB Created: 2020-07-30 17:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 552de345eec682f5fccd096f0a1de56d SHA-1: 87e1046a763d4bd7d20aed19f4f138729d2ef040 SHA-256: 8deef47bea41958ae21a4ccbf02402d1269719796b519e1ccf6eebf2dd86ff05
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body is heavily obfuscated and appears to be junk data, suggesting the primary purpose is to host these links. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of links to malicious infrastructure, and PDF_SEO_LINK_FARM indicates a large number of external links, typical of SEO poisoning or traffic redirection schemes.

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.cc/pify?keyword=lexical+analysis+pdf
    • http://files.connectedrealities.com/uploads/1/3/1/3/131379532/d55f417054788fb.pdf
    • http://files.weruntheforest.co.nz/uploads/1/3/0/7/130775200/serog-molile.pdf
    • http://files.fabriceblee.com/uploads/1/3/1/6/131606453/xibidowexiror.pdf
    • https://cdn.shopify.com/s/files/1/0437/3646/5559/files/4619213663.pdf
    • https://cdn.shopify.com/s/files/1/0432/9986/4734/files/fenomakemopifupukujowig.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/todugefozijalupavugodade.pdf
    • https://cdn.shopify.com/s/files/1/0434/5685/6230/files/zuputukuwimi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/pepiputazawaga.pdf
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/gepojosifusinamela.pdf
    • https://cdn.shopify.com/s/files/1/0440/3003/4085/files/giteraba.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dosoxuwananeworatimuk.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0099/files/2743477687.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/zixedunotupimuvozigub.pdf
    • https://cdn.shopify.com/s/files/1/0430/0007/0307/files/47907111096.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/67495865465.pdf
    • https://cdn.shopify.com/s/files/1/0433/1097/3083/files/34089736419.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_off0000aefe.bin
1c2749178677486362408fd957a9edea8ec99cf64aceada6c7d2935a54c3cf9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEFE 4760 bytes
font_01_sfnt_off0000bf3f.bin
97b3fc777dfa1b7515a30e19142834b08490dacd7af44f21e8c619177d797874		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF3F 14740 bytes

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