Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e93d1ac22b75a53…

MALICIOUS

PDF

42.2 KB Created: 2020-08-25 23:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 490af0c6d61046bc063f055ef889ab00 SHA-1: 1f28224a1bb5d7033fd2a36f4dac0839acc5d540 SHA-256: 3e93d1ac22b75a533e26983e6d5fc888649e8a5cf9d10a7202f57eed83174079
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting a spam or phishing campaign. The primary malicious URL identified is https://ttraff.ru/pify?keyword=fca+suayed+unam, which is likely used to redirect users to further malicious content.

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=fca+suayed+unam
    • http://suzimofu.coscinecreative.com/uploads/1/3/1/4/131453247/32e25e611d.pdf
    • http://litumono.rayjoneswoodboxes.com/uploads/1/3/2/3/132303108/63f53adff4.pdf
    • http://files.rainboascales.com/uploads/1/3/0/8/130874085/abca4d2c1a6b8.pdf
    • https://cdn.shopify.com/s/files/1/0429/6900/6236/files/aws_certified_solutions_architect_official_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86399573169.pdf
    • https://cdn.shopify.com/s/files/1/0446/7264/7331/files/nauka_angielskiego.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2761/files/pdf_accessibility_checker_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/8434/0630/files/zenuvonotibelebulasok.pdf
    • https://cdn.shopify.com/s/files/1/0431/0315/8433/files/nordvpn_vs_pia.pdf
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/gezatolas.pdf
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/sififijutipob.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1074/files/43197694201.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e04.bin
7a7883ae61b5027237ec144298c56e15a387b3a6f996464b88067d61aabf8c63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E04 5016 bytes
font_01_sfnt_off00006efe.bin
78e94e2e47178245ca437e301e19f50dc99845ecc02da2ba30fe2b1e34051cc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFE 2092 bytes
font_02_sfnt_off000078a3.bin
e0d380b9d2b675a95241034861c19f3c2f496fb4d40e7af21b73d740b97d3e00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A3 10380 bytes

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