Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4ccae85ad7dd31e…

MALICIOUS

PDF

35.9 KB Created: 2020-07-28 22:39:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72653f43012fc234b99a1c7acf7498be SHA-1: 37647a5af740a4c471c204fbe44ae126798c2cf9 SHA-256: f4ccae85ad7dd31eab1abbb6b4af719c9d4e2e4b8e442c831e418899dfac34c2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to an 'IEP cheat sheet template'. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many pointing to Shopify domains, likely to obscure the malicious redirector. The primary malicious IOC is the ttraff.com redirector URL.

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=iep+cheat+sheet+template
    • http://files.klbavarianwaxart.com/uploads/1/3/1/8/131856713/0e35d0df837e.pdf
    • http://files.chiefetchbergerfoundation.org/uploads/1/3/0/7/130739704/98c9a039d9dd.pdf
    • http://files.mrogrady.com/uploads/1/3/2/8/132815343/7555504.pdf
    • http://files.mindfulstrides.org/uploads/1/3/0/8/130813988/mebosomufup.pdf
    • https://cdn.shopify.com/s/files/1/0439/0970/9976/files/28673738514.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/sevodexuwiwojezit.pdf
    • https://cdn.shopify.com/s/files/1/0437/8217/6920/files/28832887880.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3330/files/wunobuginuxejitok.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1557/files/60204980767.pdf
    • https://cdn.shopify.com/s/files/1/0428/6421/4182/files/jugof.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/lerutomajilozazutopaze.pdf
    • https://cdn.shopify.com/s/files/1/0427/8855/2870/files/masirutum.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4071/files/84517763908.pdf
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/vogajodubipiviwafimula.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53741046047.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_off000054dd.bin
a26d719a2093f4c49b3cd64f15dbb7b71c658e5b780029ce52d805fabffba227		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54DD 4540 bytes
font_01_sfnt_off0000643e.bin
9e525b4d12e497efd0524d4d706551b1ca4ee9668604fc67cb78e8693a5938b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x643E 8988 bytes

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