Malicious PDF — malware analysis report

Static analysis result for SHA-256 fefb40f07350be9e…

MALICIOUS

PDF

43.1 KB Created: 2020-08-31 03:59:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3eeb9da8190d590287117ac4bae04a7a SHA-1: 5ff06f9efad86e39d9bb4c78d1bf52e240f34202 SHA-256: fefb40f07350be9ea2004a4c7fce67cb41744d268880baae73e28632b2a8f88c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=asus+zenpad+z300m+review'. The document body, though heavily obfuscated, appears to contain this URL and other benign-looking PDF links, suggesting a lure to a malicious site under the guise of a review. No scripts were extracted, and the family is unknown.

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=asus+zenpad+z300m+review
    • https://static.usrfiles.com/ugd/b8c837_2fd757cb0e90442f996a960c16712c9d.pdf
    • https://static.usrfiles.com/ugd/b88e3d_62139d45ffc148c28f9481901abd187c.pdf
    • https://static.usrfiles.com/ugd/3ab5ed_090ec644de894b96a054ad73e0064eaf.pdf
    • https://static.usrfiles.com/ugd/278743_5aee0fe967a74ec5a530e34ae61b4a9a.pdf
    • https://static.usrfiles.com/ugd/4725f1_d630ee65adba426ca5315dc39ddbade2.pdf
    • https://cdn.shopify.com/s/files/1/0429/4161/2199/files/mikatuwobep.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/deductive_method_definition.pdf
    • https://cdn.shopify.com/s/files/1/0438/5816/5925/files/pokemon_avatar_creator.pdf
    • https://static.usrfiles.com/ugd/b8c837_4dbb0c6315ab470990b15fa186d3b1ef.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ae8175f7d8343578c7e89f811b1cad2.pdf
    • https://static.usrfiles.com/ugd/4c1554_e68cc24d67904fd9b530a4038367002c.pdf
    • https://static.usrfiles.com/ugd/b8c837_9efea030c12f4ddcbf79c469a37b49f8.pdf
    • https://static.usrfiles.com/ugd/a86d68_25fe7c52a27042efa841abb58a37309c.pdf
    • https://static.usrfiles.com/ugd/b8c837_5115728ce64343c68e1683551c93fbcf.pdf
    • https://static.usrfiles.com/ugd/d3758e_f84dbb46cbd2434da6688ca1f6a31f73.pdf
    • https://static.usrfiles.com/ugd/badafb_2ad9dd2b4d3d4840a746514d3bed1c78.pdf
    • https://static.usrfiles.com/ugd/07625c_db08d20037644e8d932710f74a91dcce.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_off00006a81.bin
6790a3ac282fd063c362b79627eb1e33892049090748608f2deca40751fe28a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A81 5568 bytes
font_01_sfnt_off00007d70.bin
105d1c66b516bd37eb1966cd686c35ca228b99c4b00b490938a2249747110a67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D70 10080 bytes

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