Malicious PDF — malware analysis report

Static analysis result for SHA-256 519feb718738faf6…

MALICIOUS

PDF

43.0 KB Created: 2020-09-02 02:24:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99e9649d2248edb37c96bda6b73bc128 SHA-1: afef65b870433d826ded33d58b379821d51ca740 SHA-256: 519feb718738faf6d3b78c8be10bc7d046ceed6c2fea1248ddaee19fe0395314
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains text suggesting it is a report template, likely a lure. The PDF also contains a mass external PDF link farm, with many links pointing to static.usrfiles.com, indicating a potential SEO poisoning or link distribution tactic. No scripts were extracted from this sample.

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=cta+brain+report+template
    • https://static.usrfiles.com/ugd/b8c837_7e6aea36c5cd4d009ef0b9ffa9e8055f.pdf
    • https://static.usrfiles.com/ugd/aef5b7_456410b299c0417eb4f1797ef014716d.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a0647911b0d47e5a14ad61988378200.pdf
    • https://static.usrfiles.com/ugd/3c8574_0adbceed1cb046c09580878ad124da9b.pdf
    • https://static.usrfiles.com/ugd/b8c837_78becd815b094071a59ceb8afbc0b874.pdf
    • https://static.usrfiles.com/ugd/b8c837_53b0291f9c78495bab1a7d9d37955ae1.pdf
    • https://static.usrfiles.com/ugd/6f58fb_0f7ed24df26b441787b6cd031cab87b6.pdf
    • https://static.usrfiles.com/ugd/0dd040_0dc3a2fc82fc4752a4bb2b823a145c97.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/poneratibetupitarizofob.pdf
    • https://cdn.shopify.com/s/files/1/0435/1816/5146/files/fotodoluxonebono.pdf
    • https://cdn.shopify.com/s/files/1/0429/1090/8572/files/89529044809.pdf
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/resisting_happiness_matthew_kelly.pdf
    • https://cdn.shopify.com/s/files/1/0431/6830/1212/files/java_linear_search.pdf
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/media_interview_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/rudamuzujimib.pdf
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/78812092194.pdf
    • https://cdn.shopify.com/s/files/1/0471/0619/5606/files/14999073048.pdf
    • https://cdn.shopify.com/s/files/1/0433/7467/4083/files/puvixotexa.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_off00005c60.bin
1bba4d3b792ba4b59919f3cef854753ea38619021fc2cb129eb395b23879d55c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C60 4740 bytes
font_01_sfnt_off00006c54.bin
1b74479b58a48cdeb6e7b1905a9a56fa45f3f52b83a0a6c40a01b78a4fddeb3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C54 10616 bytes
font_02_sfnt_off00009090.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9090 4324 bytes