Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2be7c53c9684cb4…

MALICIOUS

PDF

46.4 KB Created: 2020-08-05 08:26:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 442ca5e825a2677ac2937b6ffd416643 SHA-1: 7b9ffc9d6748648d9c18fe83de1510efcfae5932 SHA-256: b2be7c53c9684cb450b35c2b1fcee5301f4898843f04d8b3e9eb78cf7455ae3d
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that a link within the document redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Ielts listening test tips pdf' and the malicious URL. This suggests a social engineering lure to trick users into visiting a potentially harmful site.

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=ielts+listening+test+tips+pdf
    • http://files.godandjonathan.com/uploads/1/3/0/7/130739658/6308178.pdf
    • http://files.flatspokecycles.com/uploads/1/3/1/4/131408529/6549756.pdf
    • http://wunezu.artbychantellemarie.com/uploads/1/3/2/8/132816036/jazida.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/87942122321.pdf
    • https://cdn.shopify.com/s/files/1/0433/7529/6670/files/wokegelufi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4505/1797/files/figibomuvodemasadesinojaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/67664825685.pdf
    • https://cdn.shopify.com/s/files/1/0428/9980/0217/files/ruteterufabel.pdf
    • https://cdn.shopify.com/s/files/1/0438/4676/2656/files/91936231555.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/atomic_structure_of_hydrogen.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/3404793926.pdf
    • https://cdn.shopify.com/s/files/1/0432/8977/2190/files/xiwurutene.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tipibag.pdf
    • https://cdn.shopify.com/s/files/1/0429/6366/5062/files/types_of_biological_hazards.pdf
    • https://cdn.shopify.com/s/files/1/0435/9333/4952/files/wells_fargo_bank_statements.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000629c.bin
7a7c3a49f7a3ce21e0b06644dd185a5e80e23434d66248b9abc87c4856f74c3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x629C 4840 bytes
font_01_sfnt_off00007332.bin
ae24b54f0b5ba2c40348801cc5e51157901591cb210d26357c0f8b01b208cb52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7332 10384 bytes
font_02_sfnt_off000096f8.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96F8 16204 bytes

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