Malicious PDF — malware analysis report

Static analysis result for SHA-256 88e0deb05149a4c4…

MALICIOUS

PDF

54.3 KB Created: 2020-07-27 22:31:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b799a8deeb44951cdf71e563a40db669 SHA-1: e46f0e3a35f92cccd7b9121c47b82160f66d4158 SHA-256: 88e0deb05149a4c48f5891e277db1540761e51c33cfdfd88ede4abea2ccfb42a
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which are designed to appear as legitimate content but redirect to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies a link to ttraff.com, a known malicious redirector. The PDF_SEO_LINK_FARM heuristic indicates a mass of external links, further supporting the malicious intent of directing users to potentially harmful content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wb?keyword=guitar%20pro%20tutorial%20pdf
    • http://files.jazdesignphotography.com/uploads/1/3/0/8/130814459/9010870.pdf
    • http://files.dysoncommunications.com/uploads/1/3/0/7/130775623/b5d6367eee.pdf
    • http://files.kevinmoldenhauer.com/uploads/1/3/1/4/131483305/8169249.pdf
    • http://files.bsa713.com/uploads/1/3/0/7/130738657/0aecd.pdf
    • http://files.atech401.com/uploads/1/3/0/7/130775016/3519656.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/dukivunosejapuvadefevu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1705/1048/files/bidukuxiriwarubiguw.pdf
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/23562090437.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/61421283929.pdf
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/59178645712.pdf
    • https://cdn.shopify.com/s/files/1/0429/4947/6518/files/jomurux.pdf
    • https://cdn.shopify.com/s/files/1/0432/3701/5719/files/tegajugasip.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/19657841504.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/8172011999.pdf
    • https://cdn.shopify.com/s/files/1/0430/0180/7007/files/kogasasixalokixosufi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4899/files/tudimarofojagad.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/fexipujugeti.pdf
    • https://cdn.shopify.com/s/files/1/0436/7230/5817/files/98470071998.pdf
    • https://cdn.shopify.com/s/files/1/0430/8808/5143/files/mokemafakenonuno.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_off00007e48.bin
72e72a7b29bec81e3ff5b0f16e48bb094120dc6eecad7b56cb414935922f43c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E48 4544 bytes
font_01_sfnt_off00008dcc.bin
832eca75057fe2c27c18313caac505c345944d7b103939cd5e485e7b66161169		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCC 12352 bytes
font_02_sfnt_off0000b435.bin
b2563e85233037e3c2780690ed1455257f868516b5a962e54e6ffe29314c9cb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB435 16312 bytes

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