Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a967a142a0e3ab0…

MALICIOUS

PDF

53.2 KB Created: 2020-08-26 09:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9d4a9781be65f7e864513153211b907 SHA-1: d7acbb5c63e9303bedcce59989d25a0aa91066f0 SHA-256: 4a967a142a0e3ab0fd2e8b02ad1e07908b4add680c921db39585a919af9a21b3
130 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the string 'https://ttraff.cc/pify?keyword=project+proposal+cover+letter+sample+doc', indicating a likely attempt to lure the user to a malicious site. The presence of a PDF link farm further supports the malicious intent, suggesting a broad distribution attempt.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=project+proposal+cover+letter+sample+doc
    • http://modofudo.kurtplinke.com/uploads/1/3/1/4/131482826/3587522.pdf
    • http://vovigog.riverglennkennels.com/uploads/1/3/1/4/131454215/nixezexirazezib.pdf
    • http://files.canineandequineranch.org/uploads/1/3/0/8/130813458/548cd8167a6.pdf
    • http://files.vendettamotorsports.com/uploads/1/3/1/4/131437418/3317402.pdf
    • http://zijut.tandhathletics.com/uploads/1/3/0/7/130776078/pexifabefap_wederavu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/77979604071.pdf
    • https://cdn.shopify.com/s/files/1/0432/9196/7652/files/fegegejixu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9282/0643/files/candidiasis_oral_nios_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0429/1854/3523/files/careers_in_computer_science_and_information_technology.pdf
    • https://cdn.shopify.com/s/files/1/0437/5429/1354/files/ejercicios_asientos_contables.pdf
    • https://cdn.shopify.com/s/files/1/0432/0906/4607/files/delhi_metro_map_pink_line.pdf
    • https://cdn.shopify.com/s/files/1/0465/0549/2638/files/34959841975.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_off00009349.bin
877bf34e8a964e9961c2052bf1d1f81441db80ec3359022b5358c03c12d21d0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9349 5356 bytes
font_01_sfnt_off0000a56d.bin
2e6ddda07b4ff546761e9b2b6805af5abc4ddc37a7df527425a80261cf953897		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA56D 10112 bytes

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