Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9b80d2009d31846…

MALICIOUS

PDF

79.8 KB Created: 2020-08-19 12:14:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a36b194b63fa650903d3120f140ff34 SHA-1: adaa840a1af08c0e238549e1efcd436e1ecb0f00 SHA-256: e9b80d2009d318461541e4e42c96f51092cc32c685f0aa6ba089d437e0de8bbb
120 Risk Score

Malware Insights

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

The PDF file contains multiple external links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to improve search engine ranking for malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=screw+thread+types+pdf, which likely serves as a gateway 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.cc/pify?keyword=screw+thread+types+pdf
    • http://jogizawak.breen.shop/uploads/1/3/1/4/131437615/02640.pdf
    • http://files.alexandrubujorsculpture.com/uploads/1/3/1/8/131871488/af24eb4a7.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugerivedisabuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/6726/0582/files/kodev.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/laregedulap.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1204107997.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wabodenerevugibew.pdf
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/69746483981.pdf
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/56880372734.pdf
    • https://cdn.shopify.com/s/files/1/0436/1378/2179/files/bauer_25_auto.pdf
    • https://cdn.shopify.com/s/files/1/0434/7671/3637/files/2695353858.pdf
    • https://cdn.shopify.com/s/files/1/0435/9690/6659/files/pottu_amman_movie_video_songs.pdf
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/lemala.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_off0000e634.bin
126ea9ce4f65b96fdffc1c2d984b89071e03358ccb1eed7921f20e3569a4e75d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE634 5508 bytes
font_01_sfnt_off0000f8fb.bin
345c953ab29db4c2bc543a9b29599c9cd41b906cc2dbf16a0a8153867c9e5588		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FB 10452 bytes
font_02_sfnt_off00011ce6.bin
479b9ed2b38c3b2436d467d04f2a5b901543c080f2594dac8580bde17b2d0a1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CE6 16172 bytes

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