Malicious PDF — malware analysis report

Static analysis result for SHA-256 c99fbfe542a9bf55…

MALICIOUS

PDF

39.2 KB Created: 2020-08-14 21:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4669361d93afcf925b1001be57b86e30 SHA-1: 9832dd0298b2c2f11e4435c0b69af3fa23059b84 SHA-256: c99fbfe542a9bf55b81185627c43c0488ad8087de4898630105ce5214fe489f0
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One of these links, 'https://ttraff.ru/wb?keyword=sono%20solo%20canzonette%20testo%20pdf', is flagged as a malicious redirector. The presence of many links, including those hosted on Shopify, suggests an attempt to distribute malicious content or conduct phishing operations by overwhelming the user with choices and hiding the true malicious destination among seemingly benign ones.

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/wb?keyword=sono%20solo%20canzonette%20testo%20pdf
    • http://foguludus.stpaulsgpk.org/uploads/1/3/1/0/131070450/viluvut.pdf
    • http://files.beadart-austria.com/uploads/1/3/1/1/131164081/solax-jeruvipaze-vifuwaxa-zifinaxuso.pdf
    • http://files.ernestob4arusd.com/uploads/1/3/0/8/130874210/rumojab.pdf
    • https://cdn.shopify.com/s/files/1/0435/5339/0743/files/dvt_in_pregnancy_rcog_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0437/9472/7069/files/birumukud.pdf
    • https://cdn.shopify.com/s/files/1/0428/2214/0070/files/wupemo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/present_perfect_tense_vs_past_simple_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/7932/6103/files/pupuve.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52665001447.pdf
    • https://cdn.shopify.com/s/files/1/0430/3824/5017/files/27086817559.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6578/files/1965_dodge_truck.pdf
    • https://cdn.shopify.com/s/files/1/0434/5842/9078/files/wizard101_tartarus_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/4940/2024/files/alter_ego_2_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/3989/1357/files/soldier_s_manual_of_common_tasks.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_off00005abd.bin
e741f3ef9a635a32c097c2c9b7bd2d1ad6983665759107c1e13820090790850b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ABD 5208 bytes
font_01_sfnt_off00006c88.bin
033c8a9fac5d07f34ee5f7aeff18955d04351231dbfffb4f336ad991999980c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C88 10936 bytes

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