Malicious PDF — malware analysis report

Static analysis result for SHA-256 2869999ef2625788…

MALICIOUS

PDF

41.9 KB Created: 2020-08-04 01:12:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b36c1a64056949e133183b24ac27c2fa SHA-1: 2bef092a1c1a1e28d160e1dd18dc53964a3a43f5 SHA-256: 2869999ef2625788f33906ec27c7af1b7f59a8d4d0a604976647cba24eb2ed5c
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 'https://ttraff.com/pify?keyword=coordinator+job+description+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which are hosted on Shopify domains. The document body, though partially corrupted, contains text related to a 'Coordinator job description pdf', suggesting a lure to entice users to click the malicious link. The ML classifier 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/pify?keyword=coordinator+job+description+pdf
    • http://files.innerpath.space/uploads/1/3/0/7/130775182/936943.pdf
    • http://files.venturaautodetailing.com/uploads/1/3/2/7/132740408/jewenunise.pdf
    • http://files.geesalaboxingclub.com/uploads/1/3/2/8/132815791/6560133.pdf
    • https://cdn.shopify.com/s/files/1/0429/3017/6159/files/butea_monosperma_review.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/tejanoro.pdf
    • https://cdn.shopify.com/s/files/1/0430/6062/5557/files/62923985174.pdf
    • https://cdn.shopify.com/s/files/1/0430/5554/6517/files/gijumuwetimixujefipida.pdf
    • https://cdn.shopify.com/s/files/1/0450/4364/6614/files/taste_and_other_tales_penguin_readers_level_5.pdf
    • https://cdn.shopify.com/s/files/1/0434/3637/6214/files/fotigujufunujubulano.pdf
    • https://cdn.shopify.com/s/files/1/0429/1310/4035/files/61797083789.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64830269039.pdf
    • https://cdn.shopify.com/s/files/1/0438/3673/5645/files/rerajifukokulolof.pdf
    • https://cdn.shopify.com/s/files/1/0432/2597/2904/files/xagamizegivilejuzubavagud.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_off00006637.bin
35513af99c84fa3f957ff529833ffe6eee3e41e0fb2ed3382c54a03f148cd2c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6637 5240 bytes
font_01_sfnt_off0000780e.bin
cf9792ed336ce0d6e6acbca44466df32e138621e806af0a68676a9256208c01a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x780E 10208 bytes

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