Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8447f39853ba048…

MALICIOUS

PDF

80.7 KB Created: 2020-09-17 12:12:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c387e596d37220b48299d3714a7c8c71 SHA-1: b1ea7d3889c2f97d1fabd8387ed4506c1a3e6675 SHA-256: c8447f39853ba04857995ac67178388ff24f359fbb7316bd99d1a969817d858f
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=jedi+sentinel+build'. This URL is likely used to direct users to a malicious site. The document body, though heavily obfuscated, contains the same string, reinforcing the lure. The ML classifier also flagged this PDF with high confidence.

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.cc/wix?keyword=jedi+sentinel+build
    • https://e28f044f-8594-4c3d-b497-da066c3a7382.filesusr.com/ugd/8e9e2f_395723642c6a44f3b6338bb00ad5a71d.pdf?index=true
    • https://54a26e53-0168-4cce-92be-90c227393740.filesusr.com/ugd/724fb5_f1a697a31c674fc58c228866c6cc1657.pdf?index=true
    • https://26b9ccb0-0283-424e-8ea7-c7e635cb3816.filesusr.com/ugd/217d68_f5f368808417439a892eef007aa7fd46.pdf?index=true
    • https://cd5b3bea-4d0a-4bfd-864f-0a07bd623901.filesusr.com/ugd/fd4c29_517e826c13e24aa2908656ef03a582e3.pdf?index=true
    • https://a67a7b8d-3810-4a2c-b932-1dd31c6abdec.filesusr.com/ugd/95089d_be4b3592d41540f180f27d92f2b76fd8.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0431/9153/3725/files/possessivartikel_im_akkusativ_bungen.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6558/files/lettering_abecedario_mayusculas_y_minusculas.pdf
    • https://cdn.shopify.com/s/files/1/0437/4318/2999/files/mogofojofifikekogezet.pdf
    • https://cdn.shopify.com/s/files/1/0434/5646/3014/files/the_opposable_mind_roger_martin.pdf
    • https://805e8ce4-c660-4d19-81bb-d866f6f63b21.filesusr.com/ugd/eda9ba_b13d092017c44268984f9230d99108e2.pdf?index=true
    • https://8ce1dcce-ed7e-4b0f-ad80-f120e3e4c77b.filesusr.com/ugd/b3318b_1fe90c1990d24c57af24e450aebdec08.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0480/6190/7108/files/sodoxutivuxumivepax.pdf
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/6309926376.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_off0000f64a.bin
7b82e4a96c78db3b16fd4083581d45d79386018d4ddb6594cdd383af897b9689		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF64A 4644 bytes
font_01_sfnt_off00010624.bin
785f4e4c5f68b572f02fa886663a0a6df31901b17e761c3d2ca813c7dcbfbf27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10624 15128 bytes

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