Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a2adc830da1cd84…

MALICIOUS

PDF

40.6 KB Created: 2020-09-04 17:14:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0151df62a2ca183fdbb67bb7b77c96e2 SHA-1: 592352cf19b723528ae8e40e1cec91ddd52322fb SHA-256: 4a2adc830da1cd8472854a4f2f78ee91a88e5aa6544dfe27a765e5f0368e6244
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a malicious redirector link disguised as a legal document. The embedded URL, https://ttraff.club/wix?keyword=durable+power+of+attorney+north+carolina+form, is flagged as malicious and likely leads to a phishing or malware distribution site. The document also contains a large number of links to other PDFs, suggesting a link farm for SEO manipulation or to obscure the malicious redirect.

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.club/wix?keyword=durable+power+of+attorney+north+carolina+form
    • https://cdn.shopify.com/s/files/1/0434/1651/8805/files/agastya_full_hd_video.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/69138564811.pdf
    • https://cdn.shopify.com/s/files/1/0437/0114/1657/files/problematika_pendidikan_agama_islam.pdf
    • https://cdn.shopify.com/s/files/1/0435/5738/8437/files/dental_anatomy_coloring_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66689816557.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e0839b1a2534d9abba6fd66bce1cfb6.pdf
    • https://static.usrfiles.com/ugd/eed56f_23cfc2159cd94f0a91677472154ea381.pdf
    • https://static.usrfiles.com/ugd/374ce0_4b806dfcd63447ce9557f488475b76c8.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ead4e8c8306479ab4a774814528b582.pdf
    • https://static.usrfiles.com/ugd/1df9ea_88ea2bb0d5cf417dbb3ce479dcf47fe2.pdf
    • https://static.usrfiles.com/ugd/3de8a6_4bc16d43e042488598fb878c0ff587f4.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_off00006259.bin
b4ca47e54fb98ef4f8b6903b205fb03c9b76ca91b6b56091d58d1684e1d31fd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6259 5408 bytes
font_01_sfnt_off000074b3.bin
a0b120718518fe86b978ef4244dfdeafa0275a191a1a78f653bc99b311cdba4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B3 9604 bytes

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