Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2a65c1f609aab1…

MALICIOUS

PDF

47.1 KB Created: 2020-08-22 14:50:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a75a4fc4f7d34ef24213c023e76cd29 SHA-1: fde76bd334ae5b677ebcc415237628c4c6a654e8 SHA-256: 9e2a65c1f609aab1d5c1aa70f8d64af0ca31559903fb4ccd4100b29f2fe9e9bc
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=ubuntu+for+vmware+workstation+12'. Additionally, a heuristic indicates a 'Clipboard command execution lure', suggesting the document instructs the user to copy and paste content into a shell. The document body, though heavily obfuscated, contains references to 'Ubuntu for vmware workstation 12' and the authoring application 'wkhtmltopdf', likely serving as a lure. The presence of numerous external PDF links, many hosted on cdn.shopify.com, further supports a link-farming or redirection strategy.

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.cc/pify?keyword=ubuntu+for+vmware+workstation+12
    • http://jogaw.southernk9.com/uploads/1/3/0/9/130969754/gobiroluzufasij.pdf
    • http://jelidaj.technoweld.net/uploads/1/3/0/7/130776891/togasi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/boss_gear_failstack_guide_bdo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11411440246.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/84866918034.pdf
    • https://cdn.shopify.com/s/files/1/0436/0821/1619/files/accident_escalation_incident_investigation_and_reporting.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/9765702236.pdf
    • https://cdn.shopify.com/s/files/1/0437/6405/6225/files/95333858819.pdf
    • https://cdn.shopify.com/s/files/1/0430/6698/2561/files/98473026739.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/19021259298.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdf
    • https://cdn.shopify.com/s/files/1/0433/6903/7980/files/zutolanofufetilika.pdf
    • https://cdn.shopify.com/s/files/1/0430/9254/1589/files/abhimanyu_tamil_movie_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/0994/7301/files/jiwedolo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/63773557160.pdf
    • https://cdn.shopify.com/s/files/1/0433/3377/9611/files/que_ver_en_cartagena_murcia.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_off00006cb9.bin
9b29e684d7a518a41c2cd969101cadcca416587a75613f9562cb26e8d427f927		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB9 5296 bytes
font_01_sfnt_off00007ebf.bin
42d950718c69823ff22b760a27ba2a05679de6ccb94c1da1874d8e64942dd04e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBF 10072 bytes
font_02_sfnt_off0000a13d.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA13D 4324 bytes

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