Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1c82a8f4cd06ba4…

MALICIOUS

PDF

82.7 KB Created: 2020-08-06 18:27:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79cba7a471127133b31039fc190fc2b4 SHA-1: e3d68ea84a8dc07695be0d50d74c2995484e0c3b SHA-256: c1c82a8f4cd06ba45855970825a23008b9608eb2d3d2602b4b0d57fa514b3b6d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=list+of+regions+in+the+philippines+pdf'. Additionally, it exhibits a PDF link farm heuristic, suggesting an attempt to distribute malicious content. The presence of a 'SE_LOLBIN_RUN_COMMAND' heuristic indicates that the document may contain instructions for executing commands, likely to facilitate the download or execution of further payloads. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=list+of+regions+in+the+philippines+pdf', reinforcing the malicious redirector finding.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=list+of+regions+in+the+philippines+pdf
    • http://files.thelordshumbled.com/uploads/1/3/1/4/131409508/1495682.pdf
    • http://files.allisoncamerongray.com/uploads/1/3/0/9/130969992/4421908.pdf
    • http://sodudog.gabicurless.com/uploads/1/3/1/4/131482975/xosemij_jipogulisapowe_begiwuzugamo.pdf
    • http://files.bahamasbeachhouseforsale.com/uploads/1/3/1/3/131380456/52b3b442.pdf
    • http://files.eazyclad.com/uploads/1/3/0/8/130873735/4020156.pdf
    • https://cdn.shopify.com/s/files/1/0431/5119/6315/files/22349489913.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/vofukevutematoxi.pdf
    • https://cdn.shopify.com/s/files/1/0440/8590/3525/files/inspect_element_discord.pdf
    • https://cdn.shopify.com/s/files/1/0428/8145/0151/files/4110660028.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/kavaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/68334730617.pdf
    • https://cdn.shopify.com/s/files/1/0433/9220/4950/files/85832223931.pdf
    • https://cdn.shopify.com/s/files/1/0431/5653/7505/files/95981401544.pdf
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/smacna_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2695/files/farabinalet.pdf
    • https://cdn.shopify.com/s/files/1/0435/7881/8715/files/suruvobifuseruzemuw.pdf
    • https://cdn.shopify.com/s/files/1/0427/5660/4070/files/65501652071.pdf
    • https://cdn.shopify.com/s/files/1/0448/1017/4630/files/el_modelo_canvas.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_off0000f299.bin
79b750860179069a2c239f9d60961fd8814262d0caa9d2bc09d01a8a90c1196c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF299 5036 bytes
font_01_sfnt_off000103bc.bin
ef72f8fb36499c41e3b736b30e236c4cd19286444c441378b8a2cae227f69cf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103BC 10620 bytes
font_02_sfnt_off0001280c.bin
175e0235b73e7e9d4c172dfae07370378d962b543538eed74668470b21174778		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1280C 16092 bytes

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