Malicious PDF — malware analysis report

Static analysis result for SHA-256 a26baecd222d06ba…

MALICIOUS

PDF

67.6 KB Created: 2020-08-06 13:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 10535d80921ec00ecaa4a6488f21d7c0 SHA-1: bcebe9db243876725468cc7f6eaef916082ea668 SHA-256: a26baecd222d06ba4789e5a91ff24934ef0f6cb19a2ddc0ed5d5aa960a099e7f
128 Risk Score

Malware Insights

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

The PDF contains a lure related to 'Rajasthan police bharti 2020 syllabus pdf' and includes a call-to-action button. It links to a redirector URL, ttraff.cc, which is flagged as malicious. The PDF also contains a large number of external links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic. The primary malicious IOC is the redirector URL.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=rajasthan+police+bharti+2020+syllabus+pdf
    • http://files.boldtypeboutique.com/uploads/1/3/0/7/130775727/mijexi_wususu.pdf
    • http://files.kerrybeckerconcrete.com/uploads/1/3/1/6/131637257/5813096.pdf
    • http://files.3dbikefit.com/uploads/1/3/0/7/130738559/708e7e346.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuxovozukirofavekejob.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/convert_html_to_angular_4.pdf
    • https://cdn.shopify.com/s/files/1/0434/0681/9493/files/66364387483.pdf
    • https://cdn.shopify.com/s/files/1/0435/2317/8656/files/kojuvatafawavov.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/82166932925.pdf
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/39018476068.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tikifulodu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/ravi_zacharias_apologetics.pdf
    • https://cdn.shopify.com/s/files/1/0434/7314/1912/files/1900772301.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dewefezagabujam.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/nutujopufutuwuruli.pdf
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/12028017316.pdf
    • https://cdn.shopify.com/s/files/1/0439/3422/0456/files/nabiwisusig.pdf
    • https://cdn.shopify.com/s/files/1/0429/4171/0499/files/92823786437.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000087ff.bin
32d5e331a6b2f6479cbe8dd206e8b3fcd25b65e9fb5ce15e7093a390fa665651		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87FF 5724 bytes
font_01_sfnt_off00009b68.bin
a7c194c348f4bc26aad06ae1fa1eadf76503a3aca856ff80314c3d87a816eea9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B68 3720 bytes
font_02_sfnt_off0000a6c8.bin
451276bc4700a5241ee17279447ae3e6900d6471fdd72244bedfc1c39a5b1d61		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6C8 15300 bytes
font_03_sfnt_off0000d59c.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD59C 4324 bytes
font_04_sfnt_off0000e39c.bin
4f011584695afd65cd85d5e36cc52c3a1d6d8636bae0eed1822c318c12e5691d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE39C 8764 bytes

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