Malicious PDF — malware analysis report

Static analysis result for SHA-256 f548f2dbe26383fb…

MALICIOUS

PDF

47.6 KB Created: 2020-08-06 18:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46b7aefa6c0e0b8998b9b92c4dd8e7d9 SHA-1: c8209ebc74e27ca2f4aaea71975669a0f0c29d8c SHA-256: f548f2dbe26383fb8f6cb02ec889b1a38a9a11a95292b1a65905402036e11f0f
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 'ttraff.com'. The document body, though partially corrupted, includes the same URL and references 'anticonvulsivantes pdf', suggesting a lure. The PDF also contains a large number of embedded links to Shopify domains, likely part of a link farm to improve search engine ranking for malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document.

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=mecanismo+de+a%25C3%25A7%25C3%25A3o+dos+anticonvulsivantes+pdf
    • http://files.fcssummerreading.org/uploads/1/3/1/8/131856212/acc6efcc53.pdf
    • http://files.mikepozzi.net/uploads/1/3/1/4/131453522/liladepevotef.pdf
    • http://files.celiadrummond.net/uploads/1/3/1/3/131379578/7318ec5d477.pdf
    • http://files.stonecutterswsq.com/uploads/1/3/1/4/131408100/begetimapenez-xonerola-madasexigig.pdf
    • http://files.cooksriversustainability.org/uploads/1/3/1/8/131871633/4294756.pdf
    • https://cdn.shopify.com/s/files/1/0429/7618/2426/files/850940219.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/6095511925.pdf
    • https://cdn.shopify.com/s/files/1/0432/3144/5156/files/midetorisameruzuvak.pdf
    • https://cdn.shopify.com/s/files/1/0429/3410/8323/files/49027326905.pdf
    • https://cdn.shopify.com/s/files/1/0435/4765/6351/files/julajefab.pdf
    • https://cdn.shopify.com/s/files/1/0436/4032/4256/files/18688825438.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/basics_of_networking_and_communication.pdf
    • https://cdn.shopify.com/s/files/1/0435/6662/9032/files/as_11_icai_revised.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73768917897.pdf
    • https://cdn.shopify.com/s/files/1/0429/7805/0201/files/92129565725.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/68357421793.pdf
    • https://cdn.shopify.com/s/files/1/0431/0692/6741/files/30959980054.pdf
    • https://cdn.shopify.com/s/files/1/0434/6616/2341/files/64084875952.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_off0000649b.bin
4103f12eb2d3fd5ce81f4dfd6de156bb127b7b020113f77f3e4d9c5a57060399
pdf-font-stream PDF embedded font (sfnt) at offset 0x649B 6416 bytes
font_01_sfnt_off00007466.bin
d1fab30cff3bf817bd27516ef5522c44a29dfac4fec3c0045da40c3b87670b5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7466 5768 bytes
font_02_sfnt_off00008730.bin
405b6eaa40099ac36ff324760cdb46a9a4e04d7f71f656d721490e8988373fce
pdf-font-stream PDF embedded font (sfnt) at offset 0x8730 12936 bytes