Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f20213fe0b01b5a…

MALICIOUS

PDF

44.0 KB Created: 2020-09-01 01:24:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90d0981ee40b51032c008d8411ab4459 SHA-1: f0e6db0b9df18b7b3ca089fde179c8ce37b20378 SHA-256: 3f20213fe0b01b5a00b2651ebba83fefaa53f8ed29e17a873fe820088a7e2234
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/wix?keyword=bunny+rabbit+face+mask+template, which is likely the malicious redirector. The PDF also contains a large number of embedded links, flagged by PDF_SEO_LINK_FARM, suggesting a link farm or SEO poisoning tactic to distribute the malicious content.

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.cc/wix?keyword=bunny+rabbit+face+mask+template
    • https://cdn.shopify.com/s/files/1/0437/9069/6597/files/kixelitumefedemefima.pdf
    • https://cdn.shopify.com/s/files/1/0429/4773/9811/files/64_x_64_images.pdf
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/12833269946.pdf
    • https://cdn.shopify.com/s/files/1/0461/9419/6643/files/terraria_ps4_crafting_guide.pdf
    • https://static.usrfiles.com/ugd/277b62_7f4e3cb36bf04dc9befdfc79c71ad435.pdf
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/nereke.pdf
    • https://cdn.shopify.com/s/files/1/0431/0849/9618/files/gelarif.pdf
    • https://cdn.shopify.com/s/files/1/0441/3492/4440/files/wuteruvizofuda.pdf
    • https://cdn.shopify.com/s/files/1/0437/7785/1549/files/strategic_advertising_management_larry_percy.pdf
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/law_of_agency_in_ethiopia.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17810153535.pdf
    • https://cdn.shopify.com/s/files/1/0432/8144/9118/files/xexugejuzoxigabebemejoxer.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060e8.bin
185ed16d63c65d2286120db9b527d96ef11d3ca7a721823bbedce9c5a3387c50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60E8 5288 bytes
font_01_sfnt_off000072d3.bin
dd7cfdea52764e9f45e0a66eaf0d5c8adf9a554b1ea78a94c24b687975571355		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72D3 10204 bytes
font_02_sfnt_off00009545.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9545 4324 bytes

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