Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dd2ffd13f7b9e1c…

MALICIOUS

PDF

37.9 KB Created: 2020-08-20 18:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87981974b6ddd54255d35eabdbd00925 SHA-1: bbcecf097e02d7bcf6f1224997f7a79f85418bbe SHA-256: 9dd2ffd13f7b9e1c163162fa297e99741a48d6bb1d188e30d6aa432ff678203a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a malicious redirector link to 'ttraff.com', which is likely intended to lead the user to a malicious site. The document body, though partially corrupted, contains the URL 'https://ttraff.com/pify?keyword=shortcut+key+switch+between+excel+worksheets', suggesting a lure related to Excel shortcuts to entice clicks. No scripts were extracted from this sample.

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=shortcut+key+switch+between+excel+worksheets
    • http://pexabi.silverweed.ca/uploads/1/3/2/3/132303099/1326030.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/79469004333.pdf
    • https://cdn.shopify.com/s/files/1/0432/6142/7876/files/40051348266.pdf
    • https://cdn.shopify.com/s/files/1/0431/5178/6135/files/69472129643.pdf
    • https://cdn.shopify.com/s/files/1/0429/1703/6198/files/81414064774.pdf
    • https://cdn.shopify.com/s/files/1/0430/9860/3669/files/95019000814.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89120948070.pdf
    • https://cdn.shopify.com/s/files/1/0436/9776/6553/files/damivizudat.pdf
    • https://cdn.shopify.com/s/files/1/0433/0556/6366/files/zasexosafofovebarizot.pdf
    • https://cdn.shopify.com/s/files/1/0432/5274/4356/files/marathi_calendar_2020_september.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_off00005644.bin
f0806f1ddec52127c686a61628015a22cdfe2bfa7ad4929c4001c6132d896ba6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5644 5248 bytes
font_01_sfnt_off00006832.bin
46961b19cd8de376d013650ccb23ae7a8c84e5173309c04709d0106b08767332		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6832 10096 bytes

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