Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d3a6f2e06bb71aa…

MALICIOUS

PDF

53.2 KB Created: 2020-09-03 03:22:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5dffd7bf8f4b4620e12b1f0bc18f5b7 SHA-1: 51b93b37429ec8ad9921e197be20a117005a31c9 SHA-256: 3d3a6f2e06bb71aa709378c7ad4cf5683229b9f12e32bfb67bacf9f999d7abb3
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 'https://ttraff.club/wix?keyword=bhai+ranjit+singh+dharna'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing its purpose as a lure to a potentially harmful external site.

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=bhai+ranjit+singh+dharna
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/wedosap.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xakuxosisubesabemobaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/8711/0037/files/vulodivufuzibaferoxadi.pdf
    • https://static.usrfiles.com/ugd/57c819_bf4844f6fcdd46739227fd57b26b0013.pdf
    • https://static.usrfiles.com/ugd/82e28d_7535e5acca3443e98fa2ecdbe538a7fd.pdf
    • https://static.usrfiles.com/ugd/f390e7_1dd3f14878894123827c0bc55562b0c4.pdf
    • https://static.usrfiles.com/ugd/3b5dd9_48741562214f4a71abf385a2ea7e5d11.pdf
    • https://static.usrfiles.com/ugd/cacfd7_52d8e740aab74596942c084f5572d73a.pdf
    • https://static.usrfiles.com/ugd/205ae4_08ec3712719c4f5d93cc6a0c24fcce1f.pdf
    • https://static.usrfiles.com/ugd/4117a9_8697b62f071e4a218a8751fa5fa9d995.pdf
    • https://static.usrfiles.com/ugd/50c35f_ebb2ed0207f242328a6d7037e1553982.pdf
    • https://static.usrfiles.com/ugd/963627_79e4e7b7100f42f7b5eeb5e024b00dd5.pdf
    • https://static.usrfiles.com/ugd/7f16bd_8d79a8e0927c40869dc437cddad4bcea.pdf
    • https://static.usrfiles.com/ugd/b8c837_84be0dd07e9441c8ba4c6d17d03b8329.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_off00008579.bin
1a16c1c9ce0f64b7f802344b1d4ccd257bbecbd8b4dae220216454f0be552e3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8579 5180 bytes
font_01_sfnt_off00009716.bin
f2dbe75e51c2de83f2dbf9f2432ce28a43e69bc8a1bed65d16580f99dc2108e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9716 15096 bytes

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