Malicious PDF — malware analysis report

Static analysis result for SHA-256 f647d42b758fc0f4…

MALICIOUS

PDF

34.0 KB Created: 2020-08-05 22:44:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a8610c96bd02c41875fe737944e9026 SHA-1: b06a361f38b1ae83b3e04193383073a05e6cd439 SHA-256: f647d42b758fc0f4a2f81a348d9c3df6cd271cca5e852b824b04c7ad4ed463f0
140 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a 'catalogue' lure and includes the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy. The primary malicious URL, https://ttraff.cc/pify?keyword=perforated+cable+tray+catalogue+pdf, is likely used to redirect users to a malicious site.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=perforated+cable+tray+catalogue+pdf
    • http://files.cherylbrowndesigns.com/uploads/1/3/0/8/130874381/kibuwopex_weluxili_vutabuk_zumoro.pdf
    • http://rojowo.earthdaystinsonbeach.org/uploads/1/3/2/6/132681670/doruludosa.pdf
    • http://files.moabgearheads.com/uploads/1/3/1/4/131483184/reboxumam-pabifeletos-navalolojamob-tamimok.pdf
    • https://cdn.shopify.com/s/files/1/0435/6617/0271/files/33905061618.pdf
    • https://cdn.shopify.com/s/files/1/0436/3098/5376/files/42162243221.pdf
    • https://cdn.shopify.com/s/files/1/0439/4863/8363/files/network_topology_lecture_notes_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/64317236919.pdf
    • https://cdn.shopify.com/s/files/1/0432/2338/4219/files/classical_adjoint_of_a_matrix.pdf
    • https://cdn.shopify.com/s/files/1/0431/3664/7317/files/68886716944.pdf
    • https://cdn.shopify.com/s/files/1/0430/1455/3763/files/66529004567.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/temufaxilagig.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51108684678.pdf
    • https://cdn.shopify.com/s/files/1/0449/1057/5771/files/ad_d_chronomancer.pdf
    • https://cdn.shopify.com/s/files/1/0430/3391/9645/files/43041014321.pdf
    • https://cdn.shopify.com/s/files/1/0431/4418/3970/files/judavozet.pdf
    • https://cdn.shopify.com/s/files/1/0440/2606/9157/files/44707611726.pdf
    • https://cdn.shopify.com/s/files/1/0428/9812/9059/files/61792424166.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_off000046eb.bin
731fd18ec7808be13a9066a64bd06f27b9c68d9bd9348e5126a8ef6cfb32399c
pdf-font-stream PDF embedded font (sfnt) at offset 0x46EB 5388 bytes
font_01_sfnt_off00005956.bin
2e259d8059eb664d42940794335df79f904a343b2633a7b5e2c74e40b3dc279c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5956 9376 bytes