Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0dc77a818486ebb…

MALICIOUS

PDF

43.5 KB Created: 2020-09-01 11:27:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a684af74dff7de06dd98bc5eb6c39584 SHA-1: 49c9a77a12f76fa7c56916427299caebd7478a18 SHA-256: e0dc77a818486ebbbc79ab0e8796ddedd21f1ccde5f2e439b5dece5217326618
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and a reference to 'Mystic Messenger', suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the primary malicious destination. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=mystic+messenger+phone+call+answers
    • https://cdn.shopify.com/s/files/1/0434/6701/4297/files/79995175931.pdf
    • https://cdn.shopify.com/s/files/1/0435/3179/6629/files/lugigabavosilipazu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1187/4716/files/flame_of_love_rosary.pdf
    • https://cdn.shopify.com/s/files/1/0435/8062/0955/files/bodmas_practice_questions.pdf
    • https://cdn.shopify.com/s/files/1/0435/2396/5080/files/kedake.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9302/files/resting_membrane_potential.pdf
    • https://cdn.shopify.com/s/files/1/0428/4379/9719/files/ic_cd4060_datasheet.pdf
    • https://static.usrfiles.com/ugd/b8c837_4b19eccdfcb944e6a3c3342d73ce3356.pdf
    • https://static.usrfiles.com/ugd/b8c837_132628c7ef364e36a9117a681bf6acdf.pdf
    • https://static.usrfiles.com/ugd/b8c837_1fdf14fbccdf47169eb3b1d1f1c95a63.pdf
    • https://static.usrfiles.com/ugd/bae363_582a7a9c6c0d4abc85c4772fe84d752f.pdf
    • https://static.usrfiles.com/ugd/fb5067_1b10c4b2527c4f23a4912bcb8acea9d9.pdf
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/66709684259.pdf
    • https://cdn.shopify.com/s/files/1/0433/5622/5686/files/18678559939.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_off00006018.bin
d08d65e6a91d50ac185ae6a42a37da8fd30889e13ec603343cc4f478e6c44b87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6018 5544 bytes
font_01_sfnt_off000072ee.bin
6efd7d8c26adc67cf81748d57ed394831ed30d02a8faabefb6b8c31e0fa1a8f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72EE 14920 bytes

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