Malicious PDF — malware analysis report

Static analysis result for SHA-256 52b544bfbd1a9883…

MALICIOUS

PDF

51.0 KB Created: 2020-07-25 22:28:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3650ea89904ede83030059a992f5bc1 SHA-1: 64853c1416ffb13d54cde73be17fe7d25c8b5011 SHA-256: 52b544bfbd1a98838cec5ea8c668884928483d1a9009e318202e892886f637b7
210 Risk Score

Malware Insights

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

The PDF contains a lure for Windows 10 Pro activation codes, which is a common social engineering tactic. It also contains numerous links, including one to a known malicious redirector. The document explicitly instructs the user to disable security software and to copy/paste content into a shell, indicating an attempt to bypass security controls and execute further malicious actions. No scripts were extracted, but the combination of social engineering and malicious links strongly suggests a downloader or phishing attack.

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
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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=windows+10+pro+activation+code
    • http://files.craigformissouri.com/uploads/1/3/1/6/131637131/zubag.pdf
    • http://files.alfonsoadan.com/uploads/1/3/1/4/131483955/2945512.pdf
    • http://files.balletdadblog.com/uploads/1/3/0/7/130776263/gufeterefaxib.pdf
    • http://files.richardsonviolinstudio.com/uploads/1/3/0/7/130739126/kugonaga.pdf
    • https://cdn.shopify.com/s/files/1/0437/9662/7618/files/55374322638.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/78337356056.pdf
    • https://cdn.shopify.com/s/files/1/0430/0043/0746/files/63620723136.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/zejizedovajuwajus.pdf
    • https://cdn.shopify.com/s/files/1/0435/3196/0474/files/98855546984.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdf
    • https://cdn.shopify.com/s/files/1/0432/5860/9817/files/43309824087.pdf
    • https://cdn.shopify.com/s/files/1/0433/4531/3941/files/80084469509.pdf
    • https://cdn.shopify.com/s/files/1/0438/9833/9496/files/jenajoforasad.pdf
    • https://cdn.shopify.com/s/files/1/0436/2724/9826/files/ruxonokadibuxaboremegexo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/15276526651.pdf
    • https://cdn.shopify.com/s/files/1/0435/5240/7704/files/68140730134.pdf
    • https://cdn.shopify.com/s/files/1/0432/2105/7700/files/4244291831.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/zafot.pdf
    • https://cdn.shopify.com/s/files/1/0433/8561/8583/files/sexiwinotofivotomakokiwo.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/
    • https://cdn.shopify.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080a9.bin
87121251ab45bb76853dacb88300eb252fd0f412e80d2d6530fe020de21b538d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80A9 5184 bytes
font_01_sfnt_off0000926a.bin
4fea7eaa0eaf03b6b8a7f8cf8727d43e9e4a8f6a3827e91a2eaf3e347c0bd3f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x926A 14056 bytes

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