Malicious PDF — malware analysis report

Static analysis result for SHA-256 9100776ef6474182…

MALICIOUS

PDF

42.1 KB Created: 2020-08-30 15:51:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: addff3faefc1eab09ccbef0e0566db69 SHA-1: ede6e9a47c912268cb6ef2baf2b2bec90a6eef03 SHA-256: 9100776ef6474182b9a797018935c112c47ede81f2cd872a0c570d692b0d2449
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. This indicates the document's primary purpose is to redirect the user to a potentially harmful site. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to mask the malicious redirector. No scripts were extracted, and the document body was heavily obfuscated, but the malicious URL is the primary indicator of compromise.

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=h%25C6%25B0ng+th%25E1%25BB%258Bnh+mobile+d%25C3%25A2n+ti%25E1%25BA%25BFn+kho%25C3%25A1i+ch%25C3%25A2
    • https://static.usrfiles.com/ugd/daca0d_e03ca1ce90d2432a8f38952382238b40.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c7ca42a9a1147c2a5e7db55848aa109.pdf
    • https://static.usrfiles.com/ugd/b8c837_aab46271fa4b4c2c8da4aa8f71a5113e.pdf
    • https://static.usrfiles.com/ugd/ce5d00_8a4222ab04634f9395adb8ce7a7a2aae.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9752/files/10658008090.pdf
    • https://cdn.shopify.com/s/files/1/0454/8486/7736/files/gpu_benchmark_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/7551/8107/files/53253085008.pdf
    • https://cdn.shopify.com/s/files/1/0432/7964/6878/files/9749790004.pdf
    • https://static.usrfiles.com/ugd/e7e4a0_fa026b63d42943499240dccb28050b69.pdf
    • https://static.usrfiles.com/ugd/a31856_d290d3f157ed4379ad7c889e0923a844.pdf
    • https://static.usrfiles.com/ugd/1d64af_9d57d844b9a8479197d806e6e2c80de2.pdf
    • https://cdn.shopify.com/s/files/1/0437/6628/4446/files/poxedojetasumawa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8913/files/epic_emr_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/xirukiwid.pdf
    • https://cdn.shopify.com/s/files/1/0448/1217/3463/files/wugudexawogaxife.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_off00005a3a.bin
b265eddcfa9ad874db56f9ae806c3267b2dbfb643e7fb83692e73f7b38823078		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A3A 5876 bytes
font_01_sfnt_off00006cfe.bin
315b6e0e17d0dd2bb88ed840831eb984b16d53553c02ce2cf91a1d9c267d7caa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFE 20692 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.