Malicious PDF — malware analysis report

Static analysis result for SHA-256 e989df7f72e35521…

MALICIOUS

PDF

42.4 KB Created: 2020-08-21 00:20:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 102130ced3172d51e44ecab4c719f182 SHA-1: 77cc181e47202a4b34db6e6dec5f64f00881c463 SHA-256: e989df7f72e35521119446e2a19af37a3754117228b4b3c646d2cf16b3d057c0
240 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1566.002 Spearphishing Link T1059.003 Windows Command Shell T1218.011 Rundll32

This PDF document contains a link farm and a malicious redirector URL, indicating a social engineering lure. The document explicitly instructs the user to install a browser extension or update, a common tactic to trick users into downloading malware or visiting malicious sites. The presence of a redirector URL to 'ttraff.ru' suggests an attempt to lead the user to a compromised or malicious destination. The document body also contains what appears to be garbled text alongside the malicious URLs, further supporting the malicious intent.

Heuristics 6

  • 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
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.ru/pify?keyword=firefox+for+linux+wget
    • http://files.aemiliawidodo.com/uploads/1/3/0/8/130874201/janidawip.pdf
    • http://bawakoj.westwoodunidos.com/uploads/1/3/1/4/131407921/2736015.pdf
    • http://files.monicaek.com/uploads/1/3/0/8/130873826/1126925.pdf
    • https://cdn.shopify.com/s/files/1/0438/9886/3771/files/gusotutet.pdf
    • https://cdn.shopify.com/s/files/1/0428/6421/4175/files/99766921422.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/fodibasivaparag.pdf
    • https://cdn.shopify.com/s/files/1/0431/1285/7754/files/jisigagusigerodarifep.pdf
    • https://cdn.shopify.com/s/files/1/0430/8969/0773/files/68723288978.pdf
    • https://cdn.shopify.com/s/files/1/0431/0404/3170/files/kexobafitufisevilagadeki.pdf
    • https://cdn.shopify.com/s/files/1/0464/2353/9864/files/77423598409.pdf
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/axa_annual_report_2018.pdf
    • https://cdn.shopify.com/s/files/1/0434/0583/6438/files/lidexenolugefajupevema.pdf
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/94905547579.pdf
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/34474933462.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_off00006978.bin
961a24647cf417ac265116bfad3ab94e2f4abaf53f077eb4e3c08d8b8b8df33b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6978 4664 bytes
font_01_sfnt_off00007981.bin
64d14a214c37ec45b2e79c94287d36c0c65113660972f9736c84ee492906dab6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7981 10396 bytes

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