Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bfd5ad55bfeeec6…

MALICIOUS

PDF

42.0 KB Created: 2020-08-31 16:02:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91e4b4cee58674402ba66d73fcbacb05 SHA-1: 57f56153c39f01de9886eff7a2c82e3101c254ed SHA-256: 1bfd5ad55bfeeec632c05dd7dce8001f42f2478b2b33a60f6888390bc6ca8e2f
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'minecraft pc free full game 2018' and a URL that matches the redirector. This suggests a social engineering lure to trick users into visiting the malicious URL. No scripts were extracted, limiting further analysis of the payload.

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=minecraft+pc+free++full+game+2018
    • https://static.usrfiles.com/ugd/6d59ab_991eabc06e60446ea847f7bf7c7d1a7e.pdf
    • https://static.usrfiles.com/ugd/83e24f_7aa05314cba747e3a71b1b3f94203648.pdf
    • https://static.usrfiles.com/ugd/e1d12c_b2d54c453c2844c49f61aab5c1c907f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_0dc1336726054f349b40800e96c1f49e.pdf
    • https://static.usrfiles.com/ugd/45e30f_d19db88cccea4769bb1f39e30f71c855.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb2dab041f91476bbe2e1167e20a9945.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/26903246444.pdf
    • https://cdn.shopify.com/s/files/1/0435/7272/3875/files/favebuzovatevalawuxida.pdf
    • https://static.usrfiles.com/ugd/b8c837_0498c0ee08044bf8bb70d73c57a1bc4a.pdf
    • https://static.usrfiles.com/ugd/b8c837_7dc1e7c75da64ea387c052e73dbacdf2.pdf
    • https://static.usrfiles.com/ugd/b8c837_bcc7154879c54b6fb5fc82c3978ee8bf.pdf
    • https://static.usrfiles.com/ugd/b8c837_2c5b2d63d23244fd94b587fa27ec72a3.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_off0000629d.bin
d326d21967efd13cfc76667133a1568602ad9ca29a5a24edf06d595283a065dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x629D 5684 bytes
font_01_sfnt_off000075f1.bin
5b75b40e540d1a211ca95e9a96ed5ae8ebe600ac5bb6aacb41ba8d6daddc7129		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F1 10880 bytes

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