Malicious PDF — malware analysis report

Static analysis result for SHA-256 d636046fb0879645…

MALICIOUS

PDF

39.9 KB Created: 2020-08-29 06:09:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b40fd43a52dc69cec6214a2ba65f5f64 SHA-1: 9a07665bbae69b8997e09ce117f4e493e2e0eec7 SHA-256: d636046fb0879645dffab0054627280eb17ba394029df9d2f50c083c551c924f
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'business statistics' and a URL that aligns with the malicious redirector heuristic. This suggests a phishing or social engineering attack aiming to redirect the user to malicious content.

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=business+statistics+for+contemporary+decision+making+pdf
    • https://static.usrfiles.com/ugd/b8c837_bc75df98817d440eaba87af0d092cd52.pdf
    • https://static.usrfiles.com/ugd/b8c837_123dfb64aad6420789208f75cca1a5df.pdf
    • https://static.usrfiles.com/ugd/b8c837_0f3b9c2cb1cd470db88665cd18bc7821.pdf
    • https://static.usrfiles.com/ugd/b8c837_3812a23079d74b67bbe662700c4bc0bd.pdf
    • https://static.usrfiles.com/ugd/b8c837_e53aff4846cd4ff38480f7f89c86b1dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_adf2ac53552b41a4b979e46e9bfcefbb.pdf
    • https://static.usrfiles.com/ugd/b8c837_fdfa90182a5d4bc28e25f13ed5d7ec77.pdf
    • https://static.usrfiles.com/ugd/b8c837_9fc565d8a5fe4862abe0ccba70beb78f.pdf
    • https://static.usrfiles.com/ugd/b8c837_94a74801f76b4755a92aa15516616763.pdf
    • https://static.usrfiles.com/ugd/b8c837_a21f66a9ab444b3892ee80a0ac0a6d98.pdf
    • https://static.usrfiles.com/ugd/b8c837_e83e55ae049b44ef9bea7ddb6f6da725.pdf
    • https://static.usrfiles.com/ugd/b8c837_54b08894991047e582f1b28c977478ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_33e26a5e05e44935a143d4af544fb78c.pdf
    • https://cdn.shopify.com/s/files/1/0452/5981/7117/files/marriage_certificate_form_odisha.pdf
    • https://cdn.shopify.com/s/files/1/0433/8040/8474/files/15596229128.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73633131036.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_off00005c25.bin
22f1f14e89c55fed212c3aa41254f580033e1ed1529dadfef7cefe36baac37fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C25 5656 bytes
font_01_sfnt_off00006f61.bin
02522feebf445095e553ba82226e55e8b14dc20234840b78e4063968e6ffbd5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F61 10528 bytes

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