Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d2a7bf8600cb12f…

MALICIOUS

PDF

43.6 KB Created: 2020-09-29 10:52:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02c7640bc4502b7eec5544af80d99a29 SHA-1: 155bf480f5a0ab8de1e9b375231e04fb09952b77 SHA-256: 3d2a7bf8600cb12fdc3492cb4065302732bb0a20145aecb821f6cf2dacabdf7d
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to suspicious domains and are flagged as malicious redirectors or part of a link farm. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, suggesting a lure to external malicious content. The ML classifier also strongly indicated 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://cctraff.ru/mozel?keyword=hokkaido+self+drive+map+pdf
    • http://files.neowwc.com/uploads/1/3/0/8/130814209/tigutasu.pdf
    • http://files.katymorrisonphotography.com/uploads/1/3/0/8/130874582/49710cd3b46.pdf
    • http://devedime.pesfusd.com/uploads/1/3/1/4/131482916/9602127.pdf
    • http://bekajogux.theemergencefoundation.com/uploads/1/3/1/4/131453540/23c873c2eb1f821.pdf
    • http://files.sjeliz.org/uploads/1/3/1/6/131636813/7008dc1d93.pdf
    • http://xabob.antoniacundy.com/uploads/1/3/2/6/132695219/zemimonofeba.pdf
    • https://cdn.shopify.com/s/files/1/0432/6404/9318/files/definition_of_motivation_according_to_different_authors.pdf
    • https://cdn.shopify.com/s/files/1/0436/9698/0136/files/adobe_photoshop_cc_filehippo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1666/6786/files/the_power_of_six_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/70785814157.pdf
    • https://cdn.shopify.com/s/files/1/0488/4447/2485/files/97382954641.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_off00006091.bin
e0d05af4178ed18eaa4ca5e58eb899a732bfc5e1cabcbd5e182551214142cf15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6091 3360 bytes
font_01_sfnt_off00006c90.bin
1a047a6fdfaef8127f5837a0b8cdc0181c6b4de0aed8b20d8dbc0036c18da702		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C90 5272 bytes
font_02_sfnt_off00007e71.bin
2039752f9cf0fb1c3a7d04b936c7ae9b34fb6a4ed3149d6e17672f9a4b2df9c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E71 10288 bytes

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