Malicious PDF — malware analysis report

Static analysis result for SHA-256 376f266b43fb08f2…

MALICIOUS

PDF

52.1 KB Created: 2020-08-10 15:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f4cf0dddfd32217128392f779c4062e SHA-1: bb8e666e0e935c6aad1647626246d0abd01912ea SHA-256: 376f266b43fb08f2ce06f12564246451a89555416413d44932d2aaeef056b0a1
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains this URL and numerous other links, many hosted on Shopify, which is characteristic of PDF link farms used for SEO poisoning or to obscure malicious destinations. The primary intent appears to be directing users to the malicious 'ttraff.ru' URL.

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=manusia+adalah+makhluk+sosial+pdf
    • http://files.hedgerow-herbals.com/uploads/1/3/1/6/131637773/bibaki.pdf
    • http://files.nikosmarinos.com/uploads/1/3/1/4/131406831/2278749.pdf
    • http://files.foodium.co.uk/uploads/1/3/1/3/131398526/masabufakukisofewasi.pdf
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/xosalifagudopetigejapopi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/41021153408.pdf
    • https://cdn.shopify.com/s/files/1/0434/7114/3078/files/sotogirapesiruwapelu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/tigisesirikekufodezezopis.pdf
    • https://cdn.shopify.com/s/files/1/0428/7063/6710/files/dusovajonedenud.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/lovaxepos.pdf
    • https://cdn.shopify.com/s/files/1/0433/3823/6062/files/24192306053.pdf
    • https://cdn.shopify.com/s/files/1/0430/0737/7567/files/powime.pdf
    • https://cdn.shopify.com/s/files/1/0438/5194/0000/files/27829810265.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pexivopagutufaxusezonav.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069f0.bin
5f07a2ff6fc01fe82b40bb5db47d91bb700450c29c9660fe540034affe35c748		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F0 4940 bytes
font_01_sfnt_off00007a7d.bin
06e71e9428fbff0417f8b0e4f3469a1764a386457f309b17ec4ed3dc096ea858		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7D 9848 bytes
font_02_sfnt_off00009c55.bin
a226eaaa5e649e0028fc1117e087bf3bc2980a71076528a684a9bbfc3b401227		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C55 17284 bytes
font_03_sfnt_off0000b522.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB522 4324 bytes

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