Malicious PDF — malware analysis report

Static analysis result for SHA-256 f11b328cee120f6d…

MALICIOUS

PDF

49.4 KB Created: 2020-08-07 16:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a61daabc564147f76ed0a05e5ea010b SHA-1: 2f4f53e8d4bf1bd1496442e7a9d09eab975a7a90 SHA-256: f11b328cee120f6db89288413c1246dd89896c5301fa568bcf657c8749402f57
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=all+important+days+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this malicious URL, suggesting the primary intent is to redirect the user to malicious content.

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/pify?keyword=all+important+days+pdf
    • http://files.scarfandbow.com/uploads/1/3/1/4/131453036/pedit.pdf
    • http://panuxufi.southwestpaddlecompany.com/uploads/1/3/2/3/132303035/5861421.pdf
    • http://files.littlemisschateau.com/uploads/1/3/1/0/131070619/lujidufuro-bakurivuval-watanugu-robakegef.pdf
    • http://files.evansadopt.com/uploads/1/3/1/4/131408439/793d9be0.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdf
    • https://cdn.shopify.com/s/files/1/0437/9305/5904/files/mulanawajakukikam.pdf
    • https://cdn.shopify.com/s/files/1/0437/2529/1674/files/98420021389.pdf
    • https://cdn.shopify.com/s/files/1/0434/5308/7911/files/cowboy_havamal.pdf
    • https://cdn.shopify.com/s/files/1/0433/4249/5899/files/kenmore_elite_refrigerator_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.pdf
    • https://cdn.shopify.com/s/files/1/0434/1009/6284/files/telugu_songs_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9524/4452/files/haloalkanes_and_haloarenes_notes.pdf
    • https://cdn.shopify.com/s/files/1/0437/0818/6792/files/grade_2_math_multiplication_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0451/2625/4745/files/bspt_thread_chart.pdf
    • https://cdn.shopify.com/s/files/1/0440/1030/7749/files/77910202752.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_off000083ae.bin
dd4bb8813df95ee0bc2e1d8348c0a2b1e2e25a8c2f39377bb12b4a86d3fcb83a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83AE 5276 bytes
font_01_sfnt_off00009593.bin
ffc38af1b7ec0c0802a792b4d8ea10c1b4067b63f4160e74e6654932122889ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9593 10264 bytes

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