Malicious PDF — malware analysis report

Static analysis result for SHA-256 278ada160fb08584…

MALICIOUS

PDF

42.6 KB Created: 2020-08-24 12:14:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 485da865edbad05f3a93ea019fb43dfd SHA-1: dcf815fa9f3c840c7f6a474b36c7870b35adda47 SHA-256: 278ada160fb08584277562f2b1d40b2aaf67724be48765759e5bec83df9452ea
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to malicious infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=angry+birds+epic+rpg++pc, which is likely intended to redirect the user to a malicious site. Another heuristic, PDF_SEO_LINK_FARM, indicates the presence of numerous external links, with the first being to cdn.shopify.com. The overall pattern suggests a phishing or redirection attempt.

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=angry+birds+epic+rpg++pc
    • http://files.theoldvicarageburley.com/uploads/1/3/1/3/131380305/jedug.pdf
    • https://cdn.shopify.com/s/files/1/0432/9416/3109/files/fofexiwutimobonokakinuna.pdf
    • https://cdn.shopify.com/s/files/1/0428/3210/1543/files/43384082945.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/asm_mfe_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78214852322.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/30283599005.pdf
    • https://cdn.shopify.com/s/files/1/0429/3450/1535/files/96460189407.pdf
    • https://cdn.shopify.com/s/files/1/0465/0552/5398/files/amps-_24e_notifier_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0452/6243/8560/files/94680049246.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/51480978988.pdf
    • https://cdn.shopify.com/s/files/1/0445/3951/0948/files/korazodinemoxosowavaxov.pdf
    • https://cdn.shopify.com/s/files/1/0429/5557/1353/files/49360474655.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/
    • https://cdn.shopify.com/s/files/1/0428/5346/6

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068bf.bin
526af991b8f96665b4c16982720e56e072cdbfd77b3d4d236446360776d2d0a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68BF 5232 bytes
font_01_sfnt_off00007a94.bin
8c43064a79b76a4b54ed956dde2e1254b8b86f1f5389692d5da69a0f080f0ecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A94 10296 bytes

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