Malicious PDF — malware analysis report

Static analysis result for SHA-256 5228bc47d1b70353…

MALICIOUS

PDF

34.2 KB Created: 2020-08-25 07:02:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 256cbef5eeb44a0df51814eb96527266 SHA-1: 240ed62928cf02f153dd317165e53b64b1091ace SHA-256: 5228bc47d1b70353290857a4d2c6e5d13d0efd283b5e86abcea5a04d24a8b85d
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com, which is further supported by a PDF link farm heuristic. The document body, though heavily obfuscated, contains the same redirector URL and references to 'basic life support training manual malaysia', suggesting a lure. The presence of a 'LOLBin run command' heuristic indicates potential execution of malicious scripts or commands. The primary attack pattern involves luring the user through a seemingly benign document to a malicious redirector.

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.
  • 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
  • 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=basic+life+support+training+manual+malaysia
    • http://files.apiswc.org/uploads/1/3/1/3/131384589/juvorununajawukijuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/zudugosi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5976/3617/files/wajofamopog.pdf
    • https://cdn.shopify.com/s/files/1/0431/6600/7445/files/74796048696.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevesuladufutaniwor.pdf
    • https://cdn.shopify.com/s/files/1/0431/3730/2690/files/93695594294.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/good_form_for_bicep_curls.pdf
    • https://cdn.shopify.com/s/files/1/0435/8556/8925/files/jean_michel_blanquer_reforme_college.pdf
    • https://cdn.shopify.com/s/files/1/0450/3647/0430/files/interior_design_magazine_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/3867/6894/files/fixetalisusaxenobarazaw.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_off000047c3.bin
7936d6752844ad5307df80c9b6484d8c3a46203a8d0e1f111c9777dabf2954cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47C3 5488 bytes
font_01_sfnt_off00005a58.bin
3861baf7a727c551b5b8a0e316f89f0eee06b7e48e5c8e7b0a84732839e121f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A58 9908 bytes

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