Malicious PDF — malware analysis report

Static analysis result for SHA-256 4338666a60cd7cbe…

MALICIOUS

PDF

41.2 KB Created: 2020-08-02 01:51:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f26f22813b80c18eb09bd2a589ac003c SHA-1: 852e4ea03da5b2fa065ba67f0988c3840c4bf99f SHA-256: 4338666a60cd7cbe6d7abb30ee44446c77b9ccb44e84a2f9c89ea9044c6b3c79
210 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning or traffic generation. One critical heuristic indicates a malicious redirector link to 'ttraff.com' with a query about 'is dashlane a virus', implying a lure to trick users into believing Dashlane is a virus. The document also instructs users to disable security software and install a browser extension, common social engineering tactics to facilitate malware delivery or credential theft. The presence of a malicious redirector and the social engineering lures strongly suggest a phishing or malware distribution campaign.

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.
  • 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
  • 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
  • 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=is+dashlane+a+virus
    • http://files.rottenrottie.com/uploads/1/3/1/4/131482887/f979514e6021.pdf
    • http://files.lasalservices.com/uploads/1/3/0/8/130874213/vesinafokuj.pdf
    • http://files.alexandrmetlinski.com/uploads/1/3/0/7/130775647/964f6a7f.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/93606875674.pdf
    • https://cdn.shopify.com/s/files/1/0437/7398/4919/files/pofukipikopuxavag.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zebegevuda.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28650507632.pdf
    • https://cdn.shopify.com/s/files/1/0437/6081/2183/files/nims_100b_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/kojunubojogi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/xafijalupimisukelewuwavar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pusowa.pdf
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/72251281984.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wonazonuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/6921/0773/files/85267805383.pdf
    • https://cdn.shopify.com/s/files/1/0433/8991/1194/files/levofedofizatezenes.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_off0000651f.bin
8c2198026e8e6854b4b8ac421b2ba28bbe5972a06fc7ba34ed230d7fd9591c43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x651F 4908 bytes
font_01_sfnt_off000075ca.bin
20cb55762b265782f3c61eb5cefbb4900cc204bae3fd98423f527e56116e873c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75CA 9980 bytes

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