Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bf4283950e274a7…

MALICIOUS

PDF

42.5 KB Created: 2020-08-23 03:26:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4754979b0157b0f8963430b7fe67cfbb SHA-1: 174b1eb01f288e1a118355979fcda4983eac0368 SHA-256: 3bf4283950e274a73f73e1ce4a9efda62912fc83253997352fe56d1a9477c79a
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to suspicious or unknown domains, and one specifically to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Forge of Empires' and a URL that matches the malicious redirector, indicating a lure to a malicious site. The presence of a link farm heuristic further supports the malicious intent of directing users to external content.

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.ru/pify?keyword=forge+of+empires+guide+bronze+age
    • http://nerazuked.taylorreportingsolutions.com/uploads/1/3/0/8/130874493/1636652.pdf
    • http://bagize.mswalton.com/uploads/1/3/1/0/131070710/mutanasedij.pdf
    • http://files.hourofgrace.org/uploads/1/3/0/7/130776291/molusegofifev.pdf
    • http://files.dipvac.org/uploads/1/3/1/4/131453494/juzepenufiji_jisodawep.pdf
    • https://cdn.shopify.com/s/files/1/0440/2796/9686/files/dakejimefekulorewubewezas.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/kulusabutu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/5196428419.pdf
    • https://cdn.shopify.com/s/files/1/0435/7043/0115/files/ex-_cell_pressure_washer.pdf
    • https://cdn.shopify.com/s/files/1/0435/2786/4469/files/stress_and_intonation_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/visut.pdf
    • https://cdn.shopify.com/s/files/1/0463/2500/6497/files/xefikufuk.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_off00006738.bin
63af4b7c8c704bb799e02eb9be3ccc34ee4f4567aacacc1bae5870110684853f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6738 5476 bytes
font_01_sfnt_off000079c5.bin
9e566f072fbbaee48e3442d7b2caa006dc4f9b2915163f83be484aa3b43b18c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79C5 10544 bytes

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