Malicious PDF — malware analysis report

Static analysis result for SHA-256 91cbde420f750ca9…

MALICIOUS

PDF

39.0 KB Created: 2020-08-14 11:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74843df2b148622bcaf4e2cad3f9f8bc SHA-1: 84e20c5fbb31f8e5eb68d5d28bd299df9093a69f SHA-256: 91cbde420f750ca9dea83a7938765cfe642ce184bcf2425f776b852b4a0c165a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=firefox+52.+3+offline'. The document body also contains this URL along with numerous other PDF links hosted on Shopify, suggesting a link farm designed to obscure the malicious destination. The primary intent appears to be directing users to the malicious redirector, likely for phishing or malware delivery.

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=firefox+52.+3+offline
    • http://vukigip.justacupowensound.com/uploads/1/3/0/8/130814297/lojuwo.pdf
    • http://files.globalisationandcities.com/uploads/1/3/1/6/131607174/jilaxafufusekiw.pdf
    • http://bubiz.magentawilde.com/uploads/1/3/1/4/131406390/605733325eb2afe.pdf
    • http://files.ywtc.ca/uploads/1/3/1/3/131398377/6234635.pdf
    • http://files.maplegrovemusicaltheatre.com/uploads/1/3/2/6/132683014/nididerubaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zozaweguxilamefawe.pdf
    • https://cdn.shopify.com/s/files/1/0437/1339/6901/files/71014397475.pdf
    • https://cdn.shopify.com/s/files/1/0437/2401/3722/files/kamiyan_song_aslam_ali_djpunjab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowojemabedeju.pdf
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/vejiwurikikikezus.pdf
    • https://cdn.shopify.com/s/files/1/0433/9095/9766/files/tumalevem.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/contrapositive_geometry_definition.pdf
    • https://cdn.shopify.com/s/files/1/0431/3353/4369/files/33778282864.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/47027946744.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/69389190912.pdf
    • https://cdn.shopify.com/s/files/1/0430/4958/2743/files/zojizorobopifene.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/69725109147.pdf
    • https://cdn.shopify.com/s/files/1/0430/9807/9399/files/kuvegikogigudal.pdf
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/zedaku.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/posunokolivakaxogigu.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_off00005d0d.bin
fa7c292c060b4bc736d1e662f50d456f556123e8bb1021525157de0090c8aef7
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0D 4848 bytes
font_01_sfnt_off00006db4.bin
10a63519774fc5ab9e5bf4e090446adccc92bb7884dac5978a60b0ae9802eb64
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB4 9720 bytes