Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c01c4638670b30e…

MALICIOUS

PDF

37.9 KB Created: 2020-08-31 02:30:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a729631a6617200e3aad6c6027ee9aac SHA-1: bf0419dca8947427acadb2faab19d03a52b681ff SHA-256: 1c01c4638670b30edf4d910429ed5e5d001c6ffde63740ad3b601fdd76635da3
128 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 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the same redirector URL. This suggests a campaign to distribute malicious content or conduct phishing via a link farm.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/wix?keyword=saint+saens+piano+concerto+2+sheet+m
    • https://cdn.shopify.com/s/files/1/0432/8259/6004/files/xirajesafalujuvuli.pdf
    • https://cdn.shopify.com/s/files/1/0434/7042/2180/files/63813251468.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.pdf
    • https://cdn.shopify.com/s/files/1/0431/2956/9434/files/32701451984.pdf
    • https://static.usrfiles.com/ugd/b8c837_2bbf3b586390451ca63f1020f7cdd8d4.pdf
    • https://static.usrfiles.com/ugd/0047a4_0384bd3b0433493298ab17a55c3801c6.pdf
    • https://static.usrfiles.com/ugd/a86d68_405d58f73d2f448da01f0af4e7c607ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a84e3cf8b1843ffa0db26a71b05c1a8.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_56e58cec8e064e19bc359398b1697f87.pdf
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/23196477756.pdf
    • https://cdn.shopify.com/s/files/1/0431/6558/1468/files/93850238083.pdf
    • https://cdn.shopify.com/s/files/1/0441/0825/1288/files/blending_brush_illustrator.pdf
    • https://cdn.shopify.com/s/files/1/0430/4781/3269/files/48348267103.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_off000048c2.bin
33fc390a22ed3ae93d444b732c863da31c24b3d60050fdc2b3d032567edb1013		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48C2 5164 bytes
font_01_sfnt_off00005a09.bin
45f95e805f73657d01168ea92c1081e2ce7ff59886805ddc636be4f0eca71200		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A09 10116 bytes
font_02_sfnt_off00007ca7.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA7 4324 bytes

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