Malicious PDF — malware analysis report

Static analysis result for SHA-256 448f9818ec6b7283…

MALICIOUS

PDF

43.7 KB Created: 2020-08-07 02:54:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc4b3e7c1201e5d5c915bfb988a6e2b7 SHA-1: 60fc7be183b1c8bdbfb1e9ce4e560e8512b333c9 SHA-256: 448f9818ec6b7283d587e202de4115f1b448cde3d95013a4c0a7d4460c0d9236
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious sites. The document body and heuristics indicate a lure related to file conversion, and the presence of a mass external PDF link farm suggests an attempt to manipulate search engine results or distribute content broadly. The primary malicious link is https://ttraff.com/pify?keyword=pdf+file+convert+to+word+online+zamzar, which likely serves as a gateway to a phishing or malware download page.

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.com/pify?keyword=pdf+file+convert+to+word+online+zamzar
    • http://files.powderkegfarms.com/uploads/1/3/0/8/130874598/ed5aae0.pdf
    • http://files.pccc4u.org/uploads/1/3/1/8/131856713/xelebomixizuta.pdf
    • http://kuwifup.wakeupandwritewrw.com/uploads/1/3/1/4/131407005/fodemugidavil.pdf
    • http://files.imaworldwideclients.com/uploads/1/3/1/3/131380397/fupilirimap-zuvutovanazudis.pdf
    • https://cdn.shopify.com/s/files/1/0436/8865/7051/files/52755964207.pdf
    • https://cdn.shopify.com/s/files/1/0428/8112/2471/files/chicco_car_seat_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/9100/8419/files/2341352943.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/zaguworidobetel.pdf
    • https://cdn.shopify.com/s/files/1/0431/3258/4098/files/90271898168.pdf
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/22417662096.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/supazubirugenogozij.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/92631021584.pdf
    • https://cdn.shopify.com/s/files/1/0440/8875/4328/files/6140556664.pdf
    • https://cdn.shopify.com/s/files/1/0428/7276/6630/files/diwopifofugexikolafizev.pdf
    • https://cdn.shopify.com/s/files/1/0436/9874/9608/files/33331359149.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/47275037176.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_off00006b82.bin
f3657e3a7c326125dedf445d0181c80db6fe9020a1ebac93b2306f4456273708
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B82 5192 bytes
font_01_sfnt_off00007d39.bin
e00941af079c4e2856b1aee8e99fc4a922a915c9d9813f61c4a72c0c9183ac09
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D39 10640 bytes