Malicious PDF — malware analysis report

Static analysis result for SHA-256 97174e9974e1f987…

MALICIOUS

PDF

35.8 KB Created: 2020-09-12 09:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b42acc158d10aa4f33cc05430e0150e SHA-1: 310bd4a9c86023ebd468fe237cef1696a167a7c9 SHA-256: 97174e9974e1f987c614ebf4d76c8f430544971b4592b77bf0ae183f5577d734
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary one directing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a popular video song, likely intended to entice clicks. The presence of a PDF malicious redirector link and a PDF link farm heuristic strongly suggests a phishing or malware distribution attempt.

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=bichhoo+video+song+full+hd
    • http://paluxitir.rochesterartsadvocate.org/uploads/1/3/0/8/130813765/8862021.pdf
    • http://wibevire.gillilandhcwildrags.com/uploads/1/3/0/7/130775407/lipetu_mepinu_bebisifuzegivev.pdf
    • http://tukemuwe.laramiebikenet.org/uploads/1/3/1/8/131858540/83468bb.pdf
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/pogil_electron_configuration_and_orbitals_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/0227/3697/files/jemuwoxijifivefudax.pdf
    • https://static.usrfiles.com/ugd/1f5cef_23128a53637f4e968f749ac76c757691.pdf
    • https://static.usrfiles.com/ugd/a7074a_251179b8439841f3901db9428ce86af3.pdf
    • https://static.usrfiles.com/ugd/d51d36_76cfd20b1b0d4c02a6aea71e77155cc5.pdf
    • https://static.usrfiles.com/ugd/dd4472_aa347551dd5d44f0af7d2ecd22eb7137.pdf
    • https://static.usrfiles.com/ugd/162fe6_2a41a989b18c43d0863044b44be67a21.pdf
    • https://static.usrfiles.com/ugd/3b7182_cf3695f636024a3085ea8a125a9f0768.pdf
    • https://static.usrfiles.com/ugd/b8c837_69eacfa2fd24478ab8177c7c07243d6e.pdf
    • https://static.usrfiles.com/ugd/122077_db59ef7fdf25402faca3ab159c5c84fb.pdf
    • https://static.usrfiles.com/ugd/1fbf8b_6d5957b9ce064311bbb48063f13a0568.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_off00004ed4.bin
0d1181ccf0962cd44e0893abfc1d1729678f28d1b7fcd6e086595942434541a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4ED4 5088 bytes
font_01_sfnt_off00006035.bin
4812267334e570cfc7464c75d7777862fbdbc4af072a28fee3f65f4dd280c5b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6035 10068 bytes

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