Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5b76625376da9e6…

MALICIOUS

PDF

58.7 KB Created: 2020-08-17 12:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 39de73fae8f6da2a87b4d7856b923191 SHA-1: b869beb0efa45a25073900e6444dc5725b67a025 SHA-256: d5b76625376da9e6397d958fd65f6ca2b8b7ad953e1e4b23ff54dd21862846a0
128 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, many of which point to Shopify domains hosting other PDF files, suggesting a link farm for SEO poisoning or traffic redirection. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to serve content related to 'film avatar bluray 720p'. This indicates a likely phishing or malware distribution attempt disguised as a download lure.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=film+avatar+bluray+720p
    • http://files.nedmechurch.org/uploads/1/3/0/7/130739776/8604295.pdf
    • https://cdn.shopify.com/s/files/1/0432/9255/7467/files/palaxipotawafowaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/3849/8206/files/nawebume.pdf
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/857546876.pdf
    • https://cdn.shopify.com/s/files/1/0431/1062/9532/files/dagutugizemu.pdf
    • https://cdn.shopify.com/s/files/1/0445/4160/8100/files/ruby_delete_key_from_hash.pdf
    • https://cdn.shopify.com/s/files/1/0430/4325/8519/files/rorus.pdf
    • https://cdn.shopify.com/s/files/1/0431/1328/3735/files/learn_calligraphy_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/9633/2705/files/gowupomageridu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7706/5121/files/fivisimaxelunuzav.pdf
    • https://cdn.shopify.com/s/files/1/0437/2358/7733/files/canara_bank_stock_statement_form_nf_902.pdf
    • https://cdn.shopify.com/s/files/1/0437/9662/7616/files/72433851213.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006952.bin
34dc3ef83a3445afa08eee670ba446485a015cfab7c428e663f3cbf13e11c4d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6952 5396 bytes
font_01_sfnt_off00007ba4.bin
cb30ccbe3470e24abea742643761fe43cfe74664858df86eeeab0c9a4c342ab2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA4 20968 bytes
font_02_sfnt_off00009bd3.bin
bad47d694a1dd9c664d92593e9aa530dcfdac95caf8f68d8ad6f6049d2ff5117		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD3 2276 bytes
font_03_sfnt_off0000a597.bin
947a22d5170e0a33e875ff6c998fd0763a2eef6813cdc228cce7f17964e1b256		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA597 2628 bytes
font_04_sfnt_off0000b0be.bin
21ce8e5bd43d63ec2aa80c805145d3f5a3152fd2a0c4dfff8877b21526fc61cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0BE 10288 bytes
font_05_sfnt_off0000d406.bin
e56f5db8faf554166087922806b3819c377976d94af14c6b8a512386de68c265		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD406 2056 bytes

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