Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4149ff9ff264af2…

MALICIOUS

PDF

39.9 KB Created: 2020-08-24 02:01:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 724b794d507334841dafb8041ec6debc SHA-1: 86e6045cf18a99cf9d1ae2996503d61e13538166 SHA-256: d4149ff9ff264af271b505ae674aa4610ada26406872cd48b40a3e8c591fbe37
208 Risk Score

Malware Insights

MITRE ATT&CK
T1204 User Execution T1204.002 Malicious File T1059 Command and Scripting Interpreter T1059.003 Windows Command Shell T1059.001 PowerShell

The PDF contains a mass external link farm and a malicious redirector URL, indicating a phishing or malware distribution attempt. Heuristics indicate the document instructs the user to copy and paste commands into a shell, a common tactic in ClickFix social engineering attacks. This likely serves to bypass macro restrictions and download a second-stage payload from the identified malicious URL.

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.com/pify?keyword=lame_enc.+dll+audacity+free
    • http://files.pelevenart.com/uploads/1/3/1/4/131406149/0f54e1f318be.pdf
    • http://radok.findinggodspeace.com/uploads/1/3/1/6/131637136/2ba51a6cd9eb.pdf
    • http://files.andreaquinnphotography.com/uploads/1/3/1/0/131070173/zejula.pdf
    • http://files.erinmerrill.studio/uploads/1/3/0/7/130739043/zikaxokelejim.pdf
    • https://cdn.shopify.com/s/files/1/0437/9751/2354/files/fesatuditemenijafif.pdf
    • https://cdn.shopify.com/s/files/1/0429/2388/4711/files/13558139130.pdf
    • https://cdn.shopify.com/s/files/1/0429/4357/8278/files/simple_file_structure.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/70985438527.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4854/files/dms_to_dd.pdf
    • https://cdn.shopify.com/s/files/1/0431/6610/5759/files/tadenirutesiguxadijepuwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3976/0295/files/lsba_membership_directory.pdf
    • https://cdn.shopify.com/s/files/1/0434/6599/8501/files/barbie_doll_clothes_patterns.pdf
    • https://cdn.shopify.com/s/files/1/0429/6287/8618/files/84082019487.pdf
    • https://cdn.shopify.com/s/files/1/0434/9375/2997/files/78533964352.pdf
    • https://cdn.shopify.com/s/files/1/0448/1554/8573/files/score_hero_game_for_laptop.pdf
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/29173788294.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_off00005f25.bin
b73db8514b5334767e241f9be1908e5d478387b5dfc94d6187f942b793dc4157		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F25 5096 bytes
font_01_sfnt_off00007078.bin
34107c7c284cf3521f49a5ada3b599222606b5a64a619db5ea83273c40e696c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7078 10084 bytes

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