Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8f6cac518b473a7…

MALICIOUS

PDF

44.6 KB Created: 2020-09-02 20:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0fcf3ec17f1de2391afa0ba867d9179 SHA-1: 9b6c2c5992ce09036ea2ff3bd43305a7b7e5669d SHA-256: f8f6cac518b473a76b02c05a61a2d047ecc6297408fc5673ea137d6bd4eed344
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, includes text related to 'Forge of Empires' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, further supporting the malicious intent.

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.me/pify?keyword=forge+of+empires+event+buildings+guide
    • https://static.usrfiles.com/ugd/7ff653_866043c5de0b43c2b978ffe49c89e11c.pdf
    • https://static.usrfiles.com/ugd/4d6844_3a9f7ede386f4827b2631c036db418c9.pdf
    • https://static.usrfiles.com/ugd/7c1f05_db777709f7724a47a299ae0cb859fc5f.pdf
    • https://static.usrfiles.com/ugd/5ad03d_1cd06ee256e44f09aa1bf2e792ecc73b.pdf
    • https://static.usrfiles.com/ugd/f515ca_fef70d6dfdf54f919b041927dd325839.pdf
    • https://cdn.shopify.com/s/files/1/0431/3271/5163/files/nizegipozumeluneke.pdf
    • https://cdn.shopify.com/s/files/1/0434/8831/3506/files/civics_class_7_chapter_2_question_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/6153/4111/files/corazon_diario_de_un_nio.pdf
    • https://cdn.shopify.com/s/files/1/0440/6607/8870/files/treatment_of_copd.pdf
    • https://cdn.shopify.com/s/files/1/0435/3005/9927/files/the_mummy_2_full_movie_in_hindi_watch_online_dailymotion.pdf
    • https://cdn.shopify.com/s/files/1/0429/1146/5638/files/number_in_english_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/7885/2507/files/atmega88_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0439/7747/4206/files/16237395843.pdf
    • https://cdn.shopify.com/s/files/1/0434/2946/2165/files/2904039003.pdf
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/ravekoxebuka.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_off0000706d.bin
e840f2147a103a3b56dd04790413389644a05cf065db524f888aff3df4cb8ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x706D 5308 bytes
font_01_sfnt_off00008270.bin
b0e9302b75be400693fdcf1f247be58d0f1125855140f61336745e6b35dfe5e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8270 10352 bytes

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