Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bb40d999bf463ec…

MALICIOUS

PDF

40.7 KB Created: 2020-08-30 01:48:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dd483b4d3e64d774b180f0b3952dd20 SHA-1: 575db3cfd310b6b129b9073f506f3da8d0748526 SHA-256: 2bb40d999bf463ec2cf7282d46105b138e63c3e7a8d84535ac81ceebd13fe43b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the primary links, 'https://ttraff.com/wix?keyword=heist+crew+members', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF links, reinforcing the link farm attack pattern. No scripts were extracted, and the family is unknown due to the lack of specific indicators.

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=heist+crew+members
    • https://static.usrfiles.com/ugd/b8c837_4f3c77502bd8481685a7886b86258d2a.pdf
    • https://static.usrfiles.com/ugd/217d68_a63ddd16bfb84dad99f07259b0899c58.pdf
    • https://static.usrfiles.com/ugd/374ce0_221710d6e994425ab0214acc96fd3dd6.pdf
    • https://static.usrfiles.com/ugd/8c2aca_3ab1509645cf42b4a61ad59ed41cc633.pdf
    • https://static.usrfiles.com/ugd/b8c837_bffe960db9a440b49904ed44d1a28be5.pdf
    • https://static.usrfiles.com/ugd/b8c837_945b6f7220ff415db9fb288c663fedef.pdf
    • https://static.usrfiles.com/ugd/b8c837_eef65faab57c451da30947b4172d077f.pdf
    • https://static.usrfiles.com/ugd/cc03df_741182c4a9c24b8a853d1ac4de8e9f66.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_3171108bd2524cb980b7c2cdad51d1b6.pdf
    • https://static.usrfiles.com/ugd/d2751c_296682b2e6b74535bc7d7dba400d6e0e.pdf
    • https://cdn.shopify.com/s/files/1/0433/7749/2118/files/acca_f3_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0429/1949/3785/files/kafus.pdf
    • https://cdn.shopify.com/s/files/1/0437/2476/7400/files/the_beatles_complete_scores_mega.pdf
    • https://cdn.shopify.com/s/files/1/0432/5110/5947/files/dotisezuwukunebi.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_off00006308.bin
7d11f8deab22b165d52a331663a811d4ea7666670f61109cf648c92c4ef9fd77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6308 4896 bytes
font_01_sfnt_off000073a8.bin
f81bcba05052619170d100df4d17ca972626c7691d51bb56e6d5d658865f48d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A8 10256 bytes

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