Malicious PDF — malware analysis report

Static analysis result for SHA-256 33280a59bffd4add…

MALICIOUS

PDF

40.5 KB Created: 2020-08-24 02:13:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 690ed9a5533d1ed3ec9efc4dccfb7f95 SHA-1: 625592bbf92623d428501f541a9af1983c395324 SHA-256: 33280a59bffd4addd99807f60c794e058a8ac77715775c83d887a85c864b9e2d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=line+graph+sample+answer+pdf', suggesting a lure to trick users into clicking a link. The presence of numerous other PDF links, many hosted on Shopify, points towards a link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted from this sample.

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=line+graph+sample+answer+pdf
    • http://josugemuz.plantbasedwithrobin.com/uploads/1/3/1/6/131636612/saturelolol.pdf
    • http://files.paper-and-light.com/uploads/1/3/2/7/132741334/nisagimerokuvigo.pdf
    • http://files.marybuchinger.com/uploads/1/3/1/6/131636969/c442e93b62d6c49.pdf
    • http://fuxokepow.lucasscholars.org/uploads/1/3/1/3/131382486/1657444.pdf
    • http://vogovel.skincarebyangela.org/uploads/1/3/1/4/131410227/5605973.pdf
    • https://cdn.shopify.com/s/files/1/0439/2216/1832/files/amorphous_and_crystalline_polymers.pdf
    • https://cdn.shopify.com/s/files/1/0434/7474/7558/files/20826133835.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/benzenoid_hydrocarbons.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/38732486703.pdf
    • https://cdn.shopify.com/s/files/1/0434/0439/4661/files/sheet_metal_gauge_chart_australia.pdf
    • https://cdn.shopify.com/s/files/1/0433/9816/8727/files/57408802855.pdf
    • https://cdn.shopify.com/s/files/1/0461/2168/1060/files/77186411715.pdf
    • https://cdn.shopify.com/s/files/1/0443/4948/9308/files/blank_calendar_template_october_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/8094/0710/files/gobumudomap.pdf
    • https://cdn.shopify.com/s/files/1/0435/6875/8943/files/whatsapp_status_love_breakup_video.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_off00005fec.bin
ee2caacb04f4603bfc6ab83a27610a5681bfb706fbc41efa3bab1675154cdd88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEC 5488 bytes
font_01_sfnt_off0000727c.bin
fc1c65ccf9eaa8fc23967a8281df7f0ea4c660900de5faae31c293d2bff4c35f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x727C 10156 bytes

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