Malicious PDF — malware analysis report

Static analysis result for SHA-256 d799f8220d422559…

MALICIOUS

PDF

41.7 KB Created: 2020-08-29 03:06:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fbee3af65dea3447466231708b1b68c SHA-1: 51947b3ab1f61fb23cdd50f71aecf5e73bae2598 SHA-256: d799f8220d42255953636b2c91d9d11b6e2ac8792984bcf29e8142777f30a119
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a known malicious redirector, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the same keywords as the redirector URL, suggesting it's a lure. The primary malicious IOC is the redirector URL, which is designed to lead users to further 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.me/wix?keyword=formative+assessment+examples+for+first+grade
    • https://static.usrfiles.com/ugd/b8c837_71b25bbc11e94eb78bd48f2cc8be4b09.pdf
    • https://static.usrfiles.com/ugd/b8c837_50bac93e13434f238ddd3c695c04caea.pdf
    • https://static.usrfiles.com/ugd/b8c837_598d2ef1033543f6ab62f6f62b077c07.pdf
    • https://static.usrfiles.com/ugd/b8c837_9dab5f8518744f5480a8a1142c8bc6f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab4b9dd1f4d2481b88e569ff2cff4b1a.pdf
    • https://static.usrfiles.com/ugd/b8c837_ea0001b221fd4fb5b415616e2a688e68.pdf
    • https://static.usrfiles.com/ugd/b8c837_117d75b6444e4070a4938bab2526fbed.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/62022957855.pdf
    • https://cdn.shopify.com/s/files/1/0429/0553/4620/files/26119919368.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93434530871.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/8793860981.pdf
    • https://static.usrfiles.com/ugd/b8c837_09afb7bc9c834125bc5547bdd4df0aea.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c9e756a72e4480692bad3d296c7bd31.pdf
    • https://static.usrfiles.com/ugd/b8c837_14d2ad49b4374aca9468dc11e86e9712.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_off00006554.bin
6a42c13ad8fc8db25dfcf293f002aae54eaea913b2709bc8013589d45d11a956		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6554 5444 bytes
font_01_sfnt_off000077c8.bin
cbe6715e18c597a263ed20fc2d365c103959a1e6b9318819896c1b0c10b22c4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C8 10052 bytes

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