Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bfcfed6b9f29e64…

MALICIOUS

PDF

43.4 KB Created: 2020-08-31 23:04:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66dc5e1b6bf0906dbb3bc0fde87769e7 SHA-1: 44930470669a88a24e22b29205c55fbaab4df574 SHA-256: 3bfcfed6b9f29e6439b3f24d86c1ca38b954737b01f7658b7ee594b04e30ab6a
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Vmware vcenter server appliance 6. 5 ovf' and the malicious URL. This suggests a phishing or social engineering attack aiming to redirect users to malicious infrastructure.

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.com/wix?keyword=vmware+vcenter+server+appliance+6.+5++ovf
    • https://cdn.shopify.com/s/files/1/0430/2831/6313/files/64935145471.pdf
    • https://cdn.shopify.com/s/files/1/0429/3342/0199/files/revogoxejidigakokefiko.pdf
    • https://cdn.shopify.com/s/files/1/0463/4030/9153/files/english_grammar_in_use_second_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1991/files/tobosizipepa.pdf
    • https://static.usrfiles.com/ugd/b8c837_71122891b4c64d9488dcbdef0f8eca2c.pdf
    • https://static.usrfiles.com/ugd/ce5d00_55d49c834bb940199248ba6e276b729c.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_6d7c5d3c71974e73b907e72034b5ac30.pdf
    • https://static.usrfiles.com/ugd/735189_c53926eb61424e75a595cd778350e5ae.pdf
    • https://static.usrfiles.com/ugd/9f6a24_3134ae5d478746a69139d73c0d95db6d.pdf
    • https://static.usrfiles.com/ugd/b4a829_cbe4f7db9f1f4eeebf2cfa04e1192cb6.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ac3ee028dd74febb13802a87a7de7f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e2ceeff3cc145b5b535b7725b6ce195.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_off000067d6.bin
f5890bea0f48c2eee30d9f2978b723f465e341f903c76e389d56eaf1fbdec82a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D6 5588 bytes
font_01_sfnt_off00007ae0.bin
7c24df50fb677f485df022618402c3d155e6956593bef6a723fc043c445de9f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE0 11652 bytes

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