Malicious PDF — malware analysis report

Static analysis result for SHA-256 d55e8426209ec3cb…

MALICIOUS

PDF

96.5 KB Created: 2020-08-23 10:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b5151658c51acd52d69b782f5ad1891 SHA-1: b8324a28fb59920602ca0d22aa86c1c3698d0c19 SHA-256: d55e8426209ec3cbb2673931059a4caf4aeb290492c239d4cafd9e9d2f08807e
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates the document is designed to redirect users to malicious infrastructure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. 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/pify?keyword=medical+terminology+suffixes+pdf
    • http://files.flyzephyr.com/uploads/1/3/0/7/130738614/wakosedafumej.pdf
    • http://files.easternshorechess.org/uploads/1/3/2/7/132740260/zunoz_xexeni_lomefifedawede_rejuvina.pdf
    • https://cdn.shopify.com/s/files/1/0437/8840/2839/files/21862271666.pdf
    • https://cdn.shopify.com/s/files/1/0437/9302/3133/files/pandora_bracelet_size_guide_in_inches.pdf
    • https://cdn.shopify.com/s/files/1/0430/9948/8423/files/maine_pyar_kiya_full_movie_khatrimaza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37741658126.pdf
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/83986157077.pdf
    • https://cdn.shopify.com/s/files/1/0434/2661/1357/files/9051960355.pdf
    • https://cdn.shopify.com/s/files/1/0429/8460/3801/files/81473561295.pdf
    • https://cdn.shopify.com/s/files/1/0438/9853/6091/files/pobavosuvikeziwi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4848/4507/files/92775855801.pdf
    • https://cdn.shopify.com/s/files/1/0428/6119/9526/files/new_album_song_video_tamil.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_off00011d5f.bin
56d4129050f578cf30ee18ae65710446afc4fc22bfb683ba9f0872efbff22802		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D5F 5652 bytes
font_01_sfnt_off00013099.bin
31af8e8fb25a88bb3d7cc99ab41429f8b2e0b2b3bd24074ba2a0bf2a33c995e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13099 27840 bytes

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