Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e9499c5c299f41d…

MALICIOUS

PDF

155.3 KB Created: 2020-08-11 09:28:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ad7a721ac3cef9888557f8ccc27f2d1 SHA-1: 3ec703b35970ce0f8818bc00732b8c65eb5fc15a SHA-256: 8e9499c5c299f41db07a0c8908d014f118b8e20046b4f98efef5aba9967e3671
60 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL. This suggests the primary intent is to lure the user to a malicious site. No scripts were extracted, limiting further analysis of the attack chain.

Heuristics 2

  • 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.
  • 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=jaros%25C5%2582aw+iwaszkiewicz+brzezina+pdf
    • http://files.martinisbistro.com/uploads/1/3/1/8/131856186/repoxoduzom.pdf
    • http://files.bluefencing.com/uploads/1/3/1/4/131407469/ea3bacfd13a.pdf
    • http://files.ellewyant.com/uploads/1/3/1/6/131637014/jopelozodumu-dirivodiboxu-jovat.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16494210232.pdf
    • https://cdn.shopify.com/s/files/1/0431/9815/2866/files/gasajurijuvurawiwusabos.pdf
    • https://cdn.shopify.com/s/files/1/0436/2236/7390/files/16240156575.pdf
    • https://cdn.shopify.com/s/files/1/0428/8456/3110/files/aws_devops_certification.pdf
    • https://cdn.shopify.com/s/files/1/0430/0141/3795/files/ethiopian_grade_4_english_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0429/3092/9827/files/fiketefosidugukiguxadip.pdf
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/buddhist_moral_philosophy.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977390730.pdf
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/98126202125.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/9010984649.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_off000225a9.bin
edce9f8eaa590add21082e9179d783bf50f8e30ab4475339e7d7ddf666d0597e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x225A9 5508 bytes
font_01_sfnt_off00023894.bin
f9a19ab852b228025210409e7b24b06766c652d41b79538625660a981c28111a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23894 11704 bytes

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