Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c6f199dc9d216cb…

MALICIOUS

PDF

43.6 KB Created: 2020-08-04 10:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88defbeab30cea8cf4862ab44252c1c5 SHA-1: 1470606db71673fe0af714560f45577e4c8d30f0 SHA-256: 4c6f199dc9d216cb4330ca74b506612109d5737e57b2ed04bde3445b4a549283
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector at `https://ttraff.ru/pify?keyword=converting+metric+measurements+worksheets+pdf`. This suggests the document is designed to lure users to malicious infrastructure, likely for phishing or malware distribution. The presence of a link farm heuristic further supports this, indicating a broad attempt to attract traffic. No scripts were extracted from this sample.

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=converting+metric+measurements+worksheets+pdf
    • http://files.ladygangmusic.com/uploads/1/3/1/0/131070753/c2680e24.pdf
    • http://files.babytimeultrasound.com/uploads/1/3/1/3/131384070/tofuvetuf.pdf
    • http://files.missionalworship.com/uploads/1/3/2/3/132302764/0aa1000e9.pdf
    • http://files.michaeljcrites.com/uploads/1/3/0/8/130813317/3130995.pdf
    • http://files.engineersinmedicine.com/uploads/1/3/1/6/131606803/f3100.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25424470269.pdf
    • https://cdn.shopify.com/s/files/1/0437/5258/7415/files/12288026803.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/storm_glass_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bizisumexu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4324/9576/files/69231373696.pdf
    • https://cdn.shopify.com/s/files/1/0430/2848/0157/files/rikilojaxagerubaxin.pdf
    • https://cdn.shopify.com/s/files/1/0431/1983/7346/files/56892873547.pdf
    • https://cdn.shopify.com/s/files/1/0435/5679/8627/files/71659160827.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/29866107133.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5195/files/faxesavujodim.pdf
    • https://cdn.shopify.com/s/files/1/0438/6911/0432/files/8943869009.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99237037604.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_off00006acb.bin
942e5cab19f34bee5a7c772f56190d94f0a7d36fa1dde5aab5d3a51d6c0b8380		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACB 5660 bytes
font_01_sfnt_off00007df9.bin
0ed052fd3d831c0605c1d165a45a4f20ceb3d73f08ad7ab4dc89921837fa5a14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF9 10204 bytes

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