Malicious PDF — malware analysis report

Static analysis result for SHA-256 408504fd92151e1a…

MALICIOUS

PDF

45.7 KB Created: 2020-08-31 07:58:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69f4fb053d055eb6251f6e90618ccc0e SHA-1: 92fb5b09e6b6a007f2ba67583e133a2af14f6996 SHA-256: 408504fd92151e1a7c024ecd31f1d9f89619aa2667c07d54d1b3c10f44329b89
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to appear as a "medical surgical nursing test bank pdf" to lure users. The primary malicious link, https://ttraff.cc/wix?keyword=medical+surgical+nursing+test+bank+pdf, is identified as a malicious redirector. The document body is heavily obfuscated but contains the same lure text and URLs. The file's purpose is to redirect users to malicious infrastructure.

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.cc/wix?keyword=medical+surgical+nursing+test+bank+pdf
    • https://cdn.shopify.com/s/files/1/0436/3150/9664/files/46936386613.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/88075317933.pdf
    • https://cdn.shopify.com/s/files/1/0450/9289/6920/files/14712637165.pdf
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/lemenefum.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3979/files/cohen_monster_culture.pdf
    • https://cdn.shopify.com/s/files/1/0433/4944/2715/files/spinach_lasagne_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0460/6518/9019/files/samipepawaxixadimalebepew.pdf
    • https://static.usrfiles.com/ugd/b4609a_a72e542da3234c6a977657549b54d2a9.pdf
    • https://static.usrfiles.com/ugd/41f880_fff79382a1df4a5a9c4ec4affdafcb05.pdf
    • https://static.usrfiles.com/ugd/48d9a1_651120da3d1944a7924a1555caf191ac.pdf
    • https://cdn.shopify.com/s/files/1/0435/1026/8068/files/67308787688.pdf
    • https://cdn.shopify.com/s/files/1/0431/5217/9364/files/24199874681.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/board_meeting_agenda_template_uk.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_off000073a4.bin
af40d725514a88b8531a9d8ad1336a5de04d5e945949f48ba5cdae1a58912128		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A4 5532 bytes
font_01_sfnt_off0000867c.bin
145ca620272a5d91ccf2802a17bb3f40e0ef35cbb4dcadae78d465850a1400bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x867C 10460 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.