Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2971c99cc31c80e…

MALICIOUS

PDF

54.6 KB Created: 2020-08-25 04:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe7eb926b0f0e8869933a996e432cd31 SHA-1: 4d4b20c5ff86aa84caea133828578c2ad496b0b8 SHA-256: e2971c99cc31c80ee073231437051dae4d56dd62cdfb281c28afed3662031fea
120 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=bsc+nursing+2nd+year+syllabus+rguhs+pdf'. This suggests a phishing or social engineering attempt to redirect the user to malicious content. The document body, though heavily corrupted, contains text related to a syllabus and the authoring application, indicating a lure. 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.ru/pify?keyword=bsc+nursing+2nd+year+syllabus+rguhs+pdf
    • http://files.wjbands.org/uploads/1/3/1/6/131606487/c9dca90.pdf
    • http://files.seasidecdc.com/uploads/1/3/1/1/131163578/zosuzudegowil_ganozifaf_mojimusubatex.pdf
    • http://files.washington-scottish.com/uploads/1/3/0/8/130874318/8b0f395751b7b3.pdf
    • http://files.esubtraininghub.com/uploads/1/3/0/7/130738740/e8d4fefaabd.pdf
    • https://cdn.shopify.com/s/files/1/0437/6897/1418/files/71174994606.pdf
    • https://cdn.shopify.com/s/files/1/0433/4993/4231/files/xasuliboxegigeresiruj.pdf
    • https://cdn.shopify.com/s/files/1/0430/1871/5289/files/barycentre_de_deux_points_exercices_corrigs.pdf
    • https://cdn.shopify.com/s/files/1/0438/2579/1138/files/guwimu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0452/5720/files/nekuluxofarilokal.pdf
    • https://cdn.shopify.com/s/files/1/0435/6921/7699/files/podejilapejujujurusinaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/8917/4432/files/oregon_driver_s_license_format.pdf
    • https://cdn.shopify.com/s/files/1/0438/9116/3291/files/majesty_2_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0431/6440/1818/files/62645661375.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rabilividobakomitunaxizug.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/fapigeri.pdf
    • https://cdn.shopify.com/s/files/1/0432/1089/9624/files/lododofemukixujezemukiwar.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_off00008928.bin
36a1e137af3abf34354e444a15b780147c71a4f1cc057cec4e1f939046c4a75a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8928 5532 bytes
font_01_sfnt_off00009be1.bin
45a9ac258581a4f916a49a83433d9f18a388dd0fc080a5d7ca02c111a6c275b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE1 10292 bytes
font_02_sfnt_off0000bf0e.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xBF0E 4324 bytes