Malicious PDF — malware analysis report

Static analysis result for SHA-256 90943195ec68e97f…

MALICIOUS

PDF

41.5 KB Created: 2020-08-31 10:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c4a3b4ee7d5025cdc158313cb0135ab SHA-1: 649d009d16e51ceff43fc413f155eaeff6ca3a70 SHA-256: 90943195ec68e97f6445ad2e541404c8f60d05417872541e370bb24b6f0c4cd5
128 Risk Score

Malware Insights

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

The PDF file contains a prominent link that mimics a download for "Bob marley greatest hits album download zip". This link, however, redirects to a known malicious domain (ttraff.cc), indicating a phishing or malware distribution attempt. The presence of a "Visual download / call-to-action button lure" heuristic further supports this. The file also contains a large number of embedded links, many pointing to Shopify, which is likely part of a link farm to improve SEO for malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=bob+marley+greatest+hits+album+download+zip
    • https://cdn.shopify.com/s/files/1/0465/5372/7126/files/24815299567.pdf
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/crosley_refrigerator_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/3576/9497/files/gmail_email_templates_extension.pdf
    • https://cdn.shopify.com/s/files/1/0434/0423/0805/files/plastic_deformation_process_of_metals.pdf
    • https://cdn.shopify.com/s/files/1/0462/4131/7015/files/ambarsariya_full_hd_movie_1080p.pdf
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/bojivebute.pdf
    • https://cdn.shopify.com/s/files/1/0440/5598/6341/files/737571470.pdf
    • https://cdn.shopify.com/s/files/1/0435/8415/9903/files/sins_of_a_solar_empire_rebellion_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0439/2324/3176/files/58555883510.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/xogir.pdf
    • https://cdn.shopify.com/s/files/1/0434/3575/3639/files/ubuntu_14._04_install_nvidia_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0434/2241/7047/files/bajapojisidoviparori.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/mexevil.pdf
    • https://cdn.shopify.com/s/files/1/0428/7106/2684/files/32990585251.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_off0000611e.bin
1291251320ade0cb1edead8c4d0b069f055168f6715d9cc4a2750e987360aefb
pdf-font-stream PDF embedded font (sfnt) at offset 0x611E 5804 bytes
font_01_sfnt_off000074d4.bin
7da9027198f4541286795b7d42e2540ea280d8e86cf7493f0b23b8e7797f734f
pdf-font-stream PDF embedded font (sfnt) at offset 0x74D4 10608 bytes