Malicious PDF — malware analysis report

Static analysis result for SHA-256 39148fb517c9f800…

MALICIOUS

PDF

48.7 KB Created: 2020-08-09 14:55:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63ae19c26cc8583e7a92cace54e5f94b SHA-1: a9247eb4a9592eaa607e5c456f0e9ea1df9fb65d SHA-256: 39148fb517c9f8003e70636983c927976a40c8f261e1a1f0f60c408035234c1f
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=justine+catalogue+august+2020+pdf'. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to a 'Justine catalogue'. The presence of a link farm heuristic further suggests an attempt to distribute malicious content or engage in SEO poisoning. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=justine+catalogue+august+2020+pdf
    • http://files.ksobha.com/uploads/1/3/0/7/130776406/bc0db6e2c5b1c.pdf
    • http://files.soundofsilver.net/uploads/1/3/0/7/130739379/nudabuluzu.pdf
    • http://files.threesistersgardens.com/uploads/1/3/1/4/131453062/5892548.pdf
    • https://cdn.shopify.com/s/files/1/0438/1478/1088/files/answer_sheet_50.pdf
    • https://cdn.shopify.com/s/files/1/0431/7085/7124/files/51925201573.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/50707428953.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/lurazesiboxavafubufudesu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7333/files/46196597651.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/27902009773.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/difewodamavorile.pdf
    • https://cdn.shopify.com/s/files/1/0439/1659/1272/files/wokuvikunusifijusexu.pdf
    • https://cdn.shopify.com/s/files/1/0438/9833/9496/files/bankersadda_general_awareness_capsule.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/manual_astronomie_clasa_12.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/gs_convert_to_png.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_off000068ea.bin
fefecee642cf9b88bae573cf944fdf15a2a23a5c208b89eb40fb163270c57e22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68EA 5492 bytes
font_01_sfnt_off00007ba8.bin
7ddf9ef5ca27ccbd28bd29df8ae8dea54120ca4f5b6f637bf81e5a66f820fcff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA8 5544 bytes
font_02_sfnt_off00008f61.bin
7539b34a39165d9a496dac1d4225fc9fa3c1244abd6ca2889f5642bbeca4d244		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F61 11260 bytes

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