Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a4cf2b5d83484f6…

MALICIOUS

PDF

37.9 KB Created: 2020-09-01 16:46:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: feb746bb07aaf8616ea59f33dac8cecb SHA-1: d8c80434c59c8f27a3134ac8720d641bf14cd467 SHA-256: 3a4cf2b5d83484f67c8b349b99886844cbbfd8f41b4ea4335506e8f9b6b4a9a3
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains the URL and a plausible lure related to 'lined paper template'. The presence of a link farm heuristic further suggests a malicious intent to distribute links, likely for phishing or malware delivery.

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.cc/wix?keyword=1%252F+2+inch+lined+paper+template
    • https://cdn.shopify.com/s/files/1/0433/6674/4214/files/vumarirozaxejelajut.pdf
    • https://cdn.shopify.com/s/files/1/0427/9861/2636/files/79238684615.pdf
    • https://cdn.shopify.com/s/files/1/0437/5026/0890/files/32529885523.pdf
    • https://static.usrfiles.com/ugd/a43ec6_adac0a87aa37480f89ecd309911e9303.pdf
    • https://cdn.shopify.com/s/files/1/0429/5242/5631/files/14908666535.pdf
    • https://cdn.shopify.com/s/files/1/0431/4166/0826/files/fast_mouse_clicker.pdf
    • https://static.usrfiles.com/ugd/469aea_4dee2228620347d2915f5fb24c3c1d9b.pdf
    • https://static.usrfiles.com/ugd/0cd019_d6e66fc37e674caf849a05e2d1cb9e11.pdf
    • https://static.usrfiles.com/ugd/e8506d_ab5125286c04468f8b5d3e197129cce1.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d3b184bea27474bb7197d5c0a753128.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_off0000583e.bin
20e1e4d8610f98a3f5524010843311d2a3aaa1c8b63dd3629cd0890c8c452505		 pdf-font-stream PDF embedded font (sfnt) at offset 0x583E 5260 bytes
font_01_sfnt_off000069fe.bin
fabfdfc0734dab5fef8d6e6b5d46e50299606dfa4a56c171a9c05ce93f1d222c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69FE 9780 bytes

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