Malicious PDF — malware analysis report

Static analysis result for SHA-256 dae3578478e6391c…

MALICIOUS

PDF

40.9 KB Created: 2020-09-01 04:06:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88a7a6222af0b8cc1a4b1402d54bd25b SHA-1: 6eb559a3b8cf5f703bb1d3b16aa1e787dbb5a4ff SHA-256: dae3578478e6391cdfcd15483371fd119bda18aa24f45f5baec360b74fd8ce79
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though partially corrupted, contains the URL 'https://ttraff.club/wix?keyword=nutritionniste+formation+cegep', which is also flagged as malicious. Additionally, the PDF hosts a link farm pointing to numerous other PDFs, suggesting a SEO-based distribution method. The primary intent appears to be redirecting users to malicious content via the ttraff.club domain.

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=nutritionniste+formation+cegep
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/anemia_perniciosa_laboratorio.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/54726075793.pdf
    • https://cdn.shopify.com/s/files/1/0432/4445/4051/files/fapedaperajagugiriz.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5511/files/zakopojevidanukafapufew.pdf
    • https://cdn.shopify.com/s/files/1/0433/9741/5077/files/botanical_name_and_common_name_of_plants.pdf
    • https://cdn.shopify.com/s/files/1/0434/3028/1377/files/80301002378.pdf
    • https://cdn.shopify.com/s/files/1/0428/4825/6156/files/dream_league_soccer_2020_kits_apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/acceleration_graph_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/2024/6427/files/applied_strength_of_materials_mott.pdf
    • https://static.usrfiles.com/ugd/9f6a24_ff8d7d4c1ef247c7a4e110fbef926a9c.pdf
    • https://static.usrfiles.com/ugd/6846fe_5930a5aed3ac45799775d06c80f2f0a1.pdf
    • https://static.usrfiles.com/ugd/b8c837_a4f379460a224a6ead704852a39dfe66.pdf
    • https://static.usrfiles.com/ugd/b28561_393a9db05b504d12a143a803c9760dc2.pdf
    • https://static.usrfiles.com/ugd/289c5e_f2aa4e858e944bc8abc874780e76bbd9.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_off000060dd.bin
24007c2e899fb6dcda7fee77fde0c91b424ff12c1ca510ce09af5a3392e5d4fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60DD 5272 bytes
font_01_sfnt_off000072bd.bin
42a39123b96b1ae8cc4c132bf3ac7e4aa90245708e3821b6d15b717e13ac23bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72BD 10580 bytes

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