Malicious PDF — malware analysis report

Static analysis result for SHA-256 20821cac7db45773…

MALICIOUS

PDF

47.4 KB Created: 2020-08-29 05:53:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a430dbedd209c16749b248fd835400e0 SHA-1: b30c7091e738c4a6cfc9861469d13d4ec8c72c2c SHA-256: 20821cac7db457738c4471f916ad47ea76638690721fcaead7210e510ea2da94
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting an SEO link farm. The primary malicious URL identified is ttraff.com, which is known for redirecting to malicious content. The document body, though heavily obfuscated, contains the same URL, reinforcing its role in the attack. No scripts were extracted, limiting the analysis of specific execution behaviors.

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/wix?keyword=pathfinder+bard+build
    • https://cdn.shopify.com/s/files/1/0437/5894/4405/files/nirolabeketerivuxafopoga.pdf
    • https://cdn.shopify.com/s/files/1/0440/5464/2853/files/jugekifeledarakeruzanirez.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/autocad_3d_landscape_models_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/8157/1227/files/75751226597.pdf
    • https://static.usrfiles.com/ugd/b8c837_5f33da28321c406381cb980a03448b05.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c858a73eb3447a9b3c756bf73a9a67f.pdf
    • https://static.usrfiles.com/ugd/b8c837_175f96dd976f40d58580415c47c74b16.pdf
    • https://static.usrfiles.com/ugd/b8c837_c63e815e773a4c7ea93a1fa3253f668e.pdf
    • https://cdn.shopify.com/s/files/1/0437/8794/4094/files/fatabez.pdf
    • https://cdn.shopify.com/s/files/1/0433/3800/6686/files/nokiwutifuguto.pdf
    • https://cdn.shopify.com/s/files/1/0437/0887/4906/files/16402721474.pdf
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/80581438724.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/wanarerabepamobanupazepe.pdf
    • https://static.usrfiles.com/ugd/b8c837_15ae33e778fe4ce399a15731f2ff40dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_22e15d914cc34657a0397e54a8e1e26e.pdf
    • https://static.usrfiles.com/ugd/b8c837_d0a240b999dd4962a9aaa97d70bbd310.pdf
    • https://static.usrfiles.com/ugd/b8c837_3266973cf40d4bb08be5c98beabdb23c.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007031.bin
c349c2e127553a99fc2f16a9726812576bea836480ab0c56dc82b7afaaabcbee
pdf-font-stream PDF embedded font (sfnt) at offset 0x7031 4728 bytes
font_01_sfnt_off00008021.bin
287e31a4c8c5b76737283945782ebddfd61bd1186a65ecb2ee28ffce7f1b5b68
pdf-font-stream PDF embedded font (sfnt) at offset 0x8021 9956 bytes
font_02_sfnt_off0000a249.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA249 4324 bytes