Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b07f6c63ca2e991…

MALICIOUS

PDF

39.4 KB Created: 2020-09-08 06:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c89de407fba28d6cf80c4f348c5f70b SHA-1: 7e5278c215e7bbce7e21678bbe3729b0ea8a2389 SHA-256: 7b07f6c63ca2e991f5f050f27120094cfc1fdbe52af1b21a8ebe1e42cc020059
150 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Age of Empires 3 cheats' and a URL that likely serves as a lure. The presence of multiple benign-looking Shopify links suggests a link farm technique to improve SEO for malicious content. No scripts were extracted from this sample.

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.link/wix?keyword=age+of+empires+3+cheats+pdf
    • https://cdn.shopify.com/s/files/1/0460/1911/7223/files/jctn_manuscript_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/6515/5489/files/tekken_game_android_mobile.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7284/files/jeterudijuzoko.pdf
    • https://static.usrfiles.com/ugd/b8c837_39b62fde182245a490cdfdb8545c9830.pdf
    • https://static.usrfiles.com/ugd/f1780b_c21d395eef8b4f5fae5abaa523ff2659.pdf
    • https://static.usrfiles.com/ugd/92ee2b_ea2be5396a564e0ba538109b25ab1277.pdf
    • https://static.usrfiles.com/ugd/e481ce_6f49f48d4a104e3cbd9019cf7b9c6330.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_c67b08a6820e4f0c94f8cc8c18e3d9cd.pdf
    • https://cdn.shopify.com/s/files/1/0432/1679/7857/files/lutomedagexuzexolefizud.pdf
    • https://cdn.shopify.com/s/files/1/0432/8577/4491/files/7th_grade_math_worksheets_printable.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96226605796.pdf
    • https://cdn.shopify.com/s/files/1/0432/9000/1572/files/25591366307.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/85560297279.pdf
    • https://cdn.shopify.com/s/files/1/0433/9938/1146/files/human_variant_5e.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_off000053b5.bin
e99650976be8d5692c468e49caa4ab772ec685562a5d70bb3e1d4e079dcde8dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53B5 5688 bytes
font_01_sfnt_off000066ed.bin
eaf3f3ccd823c0b3d9aebee3a82e27076abeee610250128ee70151f86151a3b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66ED 13352 bytes

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