Malicious PDF — malware analysis report

Static analysis result for SHA-256 e90383289620620d…

MALICIOUS

PDF

59.9 KB Created: 2020-08-22 07:10:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 034dea30022df36cd2afd76076df45ed SHA-1: d9a4aeae7955af21090cc647ab34b161ed4e6483 SHA-256: e90383289620620dd6090488ed9d89c896e206c49ec7bc83b38e0838aa394eec
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a malicious site. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation to increase visibility. The ML classifier strongly indicates maliciousness.

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/pify?keyword=child+protection+act+sa+mandatory+reporting
    • http://garoduf.sizzlegrills.co.uk/uploads/1/3/0/8/130874232/tolixudawugufexu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4755/9066/files/onemanga_com_bleach.pdf
    • https://cdn.shopify.com/s/files/1/0430/7366/7225/files/r_words_that_are_positive.pdf
    • https://cdn.shopify.com/s/files/1/0431/6427/0743/files/47662850032.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/ferenalewivawawagubekoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2919/files/wiwese.pdf
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/nabogivemejikugupasugose.pdf
    • https://cdn.shopify.com/s/files/1/0459/9100/2279/files/morolikesorodemadez.pdf
    • https://cdn.shopify.com/s/files/1/0428/2764/5095/files/information_asymmetry_real_life_examples.pdf
    • https://cdn.shopify.com/s/files/1/0434/9453/9429/files/inverted_spire_nightfall.pdf
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/tutuvojajojulenisexapoxex.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_off00009f81.bin
9b106a0e212c1b76891237254b2629a63c0d2d42535d10e6b7391818f659d1c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F81 5400 bytes
font_01_sfnt_off0000b1b0.bin
02bde45403cd4ba1f8b09af310993d37c1684b3b842a6a8d4c446a789e58425a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1B0 10124 bytes
font_02_sfnt_off0000d44d.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD44D 4324 bytes

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