Malicious PDF — malware analysis report

Static analysis result for SHA-256 3322b3d41f8c93e5…

MALICIOUS

PDF

37.7 KB Created: 2020-08-02 17:15:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c79a0501b909859fdac8f68bae7479e SHA-1: 26048c8fa978533080819b5f1a7844e384d1396e SHA-256: 3322b3d41f8c93e5f9152c3a067b6732a3b298b64fca1a5b03714fb7e7c51ebf
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL for the malicious redirector, suggesting a lure to a phishing or malware distribution site. The presence of numerous links, including the malicious one, indicates a link farm or redirection strategy.

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.com/pify?keyword=char+broil+big+easy+manual
    • http://files.allstaraussies.org/uploads/1/3/2/7/132741241/kemogesili.pdf
    • http://files.marketmovesmatt.com/uploads/1/3/0/8/130874629/nuvigure-bufagejiv.pdf
    • http://files.urbanwildcalgary.ca/uploads/1/3/0/7/130740444/9948792.pdf
    • http://files.mtbmorocco.com/uploads/1/3/1/1/131163914/sisiti-belasojun-samabo.pdf
    • http://files.firebirdnewzeal.org/uploads/1/3/0/7/130739996/7942514.pdf
    • https://cdn.shopify.com/s/files/1/0429/3014/3395/files/jiteparujawumoba.pdf
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/tifenutomaxejodikokupufap.pdf
    • https://cdn.shopify.com/s/files/1/0437/3502/3770/files/rotijalalozusim.pdf
    • https://cdn.shopify.com/s/files/1/0439/8078/3774/files/how_to_find_angle_between_two_vectors.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/51746272324.pdf
    • https://cdn.shopify.com/s/files/1/0433/5471/8358/files/99699232047.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3019/files/buxupixakovezonura.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bapumonotirugapagemuzigin.pdf
    • https://cdn.shopify.com/s/files/1/0434/4948/3420/files/nginx_log_rotation.pdf
    • https://cdn.shopify.com/s/files/1/0435/5417/7183/files/55393491709.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_off00005175.bin
3e9db902d9d3adc362c3e08b3091b912935cc8b787ad5c5361aaaf5d6b0e52f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5175 5248 bytes
font_01_sfnt_off00006328.bin
14fecf45cc5c5f6f6ec214873f532aae43bd025ca510b98f061f8d9f4ed4c263		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6328 11372 bytes

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