Malicious PDF — malware analysis report

Static analysis result for SHA-256 52fca108c37dfcf3…

MALICIOUS

PDF

43.5 KB Created: 2020-08-04 22:20:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88e1e01bfeedd412c785abc11c3e78fe SHA-1: 5194f3a93f166ea4c0305c45cb307eab1ab408bc SHA-256: 52fca108c37dfcf370ca9342c278d73d2d974b904f8b9442bfca9ad174151dd0
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=pdf+annotator+benzeri+program'. The document body, though heavily obfuscated, also contains this URL and numerous other links, suggesting a link farm or redirection strategy. The primary intent appears to be directing users to malicious infrastructure under the guise of a PDF tool.

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=pdf+annotator+benzeri+program
    • http://bosuvip.mooremiracles.com/uploads/1/3/0/7/130775085/88b9be7.pdf
    • http://files.thepolisheddistrict.com/uploads/1/3/0/7/130739654/27a768d.pdf
    • http://files.eco-leo.com/uploads/1/3/2/3/132302816/sotuded.pdf
    • https://cdn.shopify.com/s/files/1/0437/3767/7989/files/28261341283.pdf
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/53284054210.pdf
    • https://cdn.shopify.com/s/files/1/0432/0080/7070/files/pmp_braindumps.pdf
    • https://cdn.shopify.com/s/files/1/0449/2309/3147/files/silk_meeting_in_my_bedroom.pdf
    • https://cdn.shopify.com/s/files/1/0437/9587/3949/files/dyson_dc07_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/5665097559.pdf
    • https://cdn.shopify.com/s/files/1/0431/6764/5857/files/klove_phone_number.pdf
    • https://cdn.shopify.com/s/files/1/0437/7211/7141/files/digilabobesa.pdf
    • https://cdn.shopify.com/s/files/1/0429/3738/5123/files/32986674383.pdf
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/37063857314.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/14386876091.pdf
    • https://cdn.shopify.com/s/files/1/0432/5467/7662/files/xulevo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000697a.bin
9eb341d6e91ccfeb92c33c365e92453259c9ce2b217d4c5121126ec0485c0bca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x697A 5340 bytes
font_01_sfnt_off00007b9e.bin
5b492ae4006d5b0cc235111619ef0db3776fe0c273b962f37b6b3a046c8bc7eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9E 11640 bytes

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