Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce20edb4e0078ba8…

MALICIOUS

PDF

54.4 KB Created: 2020-09-08 07:38:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88b2e7c6d7e09437dd6f4ee20681816d SHA-1: 41e021c099bc4720bd7d233aadf96b331f478c6d SHA-256: ce20edb4e0078ba8f7b63367471fa933f0383a0929407343fc279a267ecb95a2
160 Risk Score

Malware Insights

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

The PDF contains a lure suggesting a software crash, directing the user to a malicious URL. It also functions as a link farm, hosting numerous other PDF documents, likely for SEO poisoning or to distribute further malicious content. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document may also instruct the user to execute commands, further supporting a malicious intent.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=spreadsheet+compare+2016+crashes+windows+10
    • https://cdn.shopify.com/s/files/1/0460/6518/9019/files/movimentao_e_armazenagem.pdf
    • https://cdn.shopify.com/s/files/1/0439/2547/1400/files/pandoc_markdown_to_css.pdf
    • https://cdn.shopify.com/s/files/1/0430/4823/9257/files/todexefiwunazigisujep.pdf
    • https://cdn.shopify.com/s/files/1/0435/3697/3983/files/adobe_reader_dc_free_offline.pdf
    • https://cdn.shopify.com/s/files/1/0435/4169/2570/files/90345827304.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9335/files/dipodevusewug.pdf
    • https://static.usrfiles.com/ugd/ac51ce_bd674a6ae9c6487d88a8ae9c1f0478ad.pdf
    • https://static.usrfiles.com/ugd/c33cdb_315ac72bfadb4b69a25090d71bcf52d1.pdf
    • https://static.usrfiles.com/ugd/0e6328_9a843704df7c40819c215bc546213c3b.pdf
    • https://static.usrfiles.com/ugd/a2c2bc_f452ce74a80b4a479318e90fdcb6488a.pdf
    • https://static.usrfiles.com/ugd/f90bad_95eae55af6964ac283279fd016aae4ba.pdf
    • https://cdn.shopify.com/s/files/1/0430/6268/9946/files/arya_2_songs_naasongs._com.pdf
    • https://cdn.shopify.com/s/files/1/0437/8705/9352/files/tigutimazaline.pdf
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/vuxadepugu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5633/9871/files/56472099340.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006452.bin
ef0ff104ea44b4f76f2e317c05d944ff73adab4e11d451763276b796cfc564ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6452 2868 bytes
font_01_sfnt_off00006e84.bin
4823099633e3af26f6d25f63ada011bceea3ab077acb43fc6823ab7ad2c77ed0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E84 5744 bytes
font_02_sfnt_off000081f7.bin
894bc59420492bdf396c7ae10802535d29d488d74d835334639f1742ea9ef755		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81F7 11136 bytes
font_03_sfnt_off0000a832.bin
0403557a8e7afa4f9ebc5da5b7e4d103d41de9f34b136e2e758ee05b3fb2871f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA832 16300 bytes
font_04_sfnt_off0000bd7d.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD7D 4324 bytes

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