Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f3fbb44c962e2d7…

MALICIOUS

PDF

43.1 KB Created: 2020-08-14 00:18:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd4da71f023593a33b58cb20138fdfd4 SHA-1: 3d191d1361ede6655a365444d13bbf54cb029401 SHA-256: 9f3fbb44c962e2d759f64f05cb8c33141dab93252834cd4fabc1007e8dd7ce80
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing:Spearphishing Attachment T1204.002 Malicious File:Malicious Link

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting a tactic to manipulate search results or distribute malicious content. The ML classifier also flagged this PDF as malicious. The primary malicious IOC is the redirector URL.

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.cc/pify?keyword=address+resolution+protocol+tutorial+pdf
    • http://nogekorof.1am.ency-education.com/uploads/1/3/0/9/130969742/308442.pdf
    • http://pusisi.swampfest.ca/uploads/1/3/0/8/130813528/f522b47.pdf
    • http://tometu.fcstnebraska.com/uploads/1/3/1/1/131164250/904894.pdf
    • http://files.lovettpianoworks.com/uploads/1/3/1/3/131381109/3756781.pdf
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/suikoden_2_recruitment_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/0842/6147/files/adele_rolling_in_the_deep_piano.pdf
    • https://cdn.shopify.com/s/files/1/0433/6133/7494/files/97213046198.pdf
    • https://cdn.shopify.com/s/files/1/0433/6458/1525/files/nepiwozaferejuku.pdf
    • https://cdn.shopify.com/s/files/1/0436/9373/6089/files/kelunivozeloxubafu.pdf
    • https://cdn.shopify.com/s/files/1/0437/4190/5050/files/chemistry_notes_for_class_11.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/binary_multiplication_algorithm.pdf
    • https://cdn.shopify.com/s/files/1/0437/7352/6178/files/9984475849.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdf
    • https://cdn.shopify.com/s/files/1/0434/1635/4978/files/2017_calendar_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/2912/6550/files/wotifib.pdf
    • https://cdn.shopify.com/s/files/1/0430/8185/9225/files/67721886991.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_off00006911.bin
97675a3e1b05674a57cf986a0859f5fdb76db08e91fa8b09446f3156a7b0996c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6911 5140 bytes
font_01_sfnt_off00007a97.bin
05ed22b585a64a9e70fed26096f0336464915a40955a276e4941b1ea9ced7c52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A97 10816 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.