Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab5c3a3b68ee8440…

MALICIOUS

PDF

41.1 KB Created: 2020-08-30 02:03:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf94356630ebe7fc732653f8fd4dc2a5 SHA-1: 6482047779ce768d69ffda8a54e8ae22572c6f34 SHA-256: ab5c3a3b68ee84400845b1885510960f114cda7843183f9f74343f13d07e75ba
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the URL pointing to ttraff.com, which is identified as a known malicious redirector. The document body contains obfuscated text and URLs, including the malicious redirector and numerous benign Shopify links, suggesting an attempt to disguise malicious activity within a large number of links.

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=abiotic+things+in+tropical+rainforest
    • https://cdn.shopify.com/s/files/1/0430/2598/9785/files/sass_font-_face.pdf
    • https://cdn.shopify.com/s/files/1/0437/7808/0925/files/10299302722.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9029/files/basic_statistical_tests.pdf
    • https://static.usrfiles.com/ugd/b8c837_e268caaef2da41fcadac0c154334b4f2.pdf
    • https://cdn.shopify.com/s/files/1/0450/1949/6606/files/kagerou_act_overlay.pdf
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/matagalls_per_collformic_wikiloc.pdf
    • https://cdn.shopify.com/s/files/1/0437/7103/5809/files/amritvani_ram_sharnam_audio.pdf
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/how_to_uninstall_steam_games.pdf
    • https://static.usrfiles.com/ugd/b8c837_3020d7d9c3fa4affaa29f456dc8a2463.pdf
    • https://static.usrfiles.com/ugd/b8c837_8725122567ee40dab0aea424436dcdea.pdf
    • https://static.usrfiles.com/ugd/b8c837_e5267b53193c413aad1ec56b7ba37177.pdf
    • https://static.usrfiles.com/ugd/b8c837_c1a25227efe24efa84f4228e272ced14.pdf
    • https://static.usrfiles.com/ugd/0049ca_592cd78199c64753b1886f18486b7947.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_off00006208.bin
7cbfcd7f074eca317e5fcce64e004d042aeb948bf7c169b8ee12170376458476		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6208 5408 bytes
font_01_sfnt_off00007458.bin
3018d59b46ecad2987f8ad5706160faa9de3e3c038e838afc7bd964325405d4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7458 10268 bytes

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