Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d5b11d740c3457…

MALICIOUS

PDF

38.6 KB Created: 2020-08-21 04:39:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c2684d9777ff95f3214dea3f1085764 SHA-1: 6e231291008d8a6a249979f180151a23baf29928 SHA-256: f0d5b11d740c34575b1dc64a7d72bf8adea7a34fb00cf47c9e4513b2fe66d4b3
120 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 'https://ttraff.com/pify?keyword=alagappan+clinical+medicine+4th+edition+pdf'. This URL is embedded within the document's body, disguised as a link to a medical textbook. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted from this sample.

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=alagappan+clinical+medicine+4th+edition+pdf
    • http://files.northlittletonpromise.org/uploads/1/3/2/6/132682974/9290007.pdf
    • http://files.multiplicitycreations.com/uploads/1/3/2/7/132740278/5728887b8b1.pdf
    • https://cdn.shopify.com/s/files/1/0436/4890/9462/files/john_deere_135.pdf
    • https://cdn.shopify.com/s/files/1/0430/2798/8634/files/59564268858.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/34482430581.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31178329868.pdf
    • https://cdn.shopify.com/s/files/1/0428/5952/8355/files/javascript_slider_bar.pdf
    • https://cdn.shopify.com/s/files/1/0459/5456/4255/files/8210992002.pdf
    • https://cdn.shopify.com/s/files/1/0432/2544/8615/files/immunization_record_ontario.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/integration_of_trigonometric_functions_problems_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/16097145570.pdf
    • https://cdn.shopify.com/s/files/1/0435/4097/1674/files/perupulubapumiri.pdf
    • https://cdn.shopify.com/s/files/1/0431/0653/3525/files/bt_megastream_fault_reporting.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/carmen_sandiego_game_windows_7.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044c2.bin
d9001e02b5f7392704b3b106e0e66030a41469d02e860b46d036d954457e6d87
pdf-font-stream PDF embedded font (sfnt) at offset 0x44C2 5372 bytes
font_01_sfnt_off000056e9.bin
a86de62718e2b079a6b4f112fe6aee00b200819e7caf82fc66aa5f1f89734037
pdf-font-stream PDF embedded font (sfnt) at offset 0x56E9 9704 bytes
font_02_sfnt_off0000784c.bin
58926b53c76d298f49891827f664a116c10da4e9d8d357835a3c6b51bc668427
pdf-font-stream PDF embedded font (sfnt) at offset 0x784C 16152 bytes