Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2ce2d73cc635fea…

MALICIOUS

PDF

43.4 KB Created: 2020-08-29 11:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cbc96615ad29485ae86f471527b1018 SHA-1: 6e8ebb854c074e33d561cdd4bd1526516b1f6dd3 SHA-256: a2ce2d73cc635feacc5d868f1471a4ed6c6b95a108fbc86a13cd7f73612dc3cf
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector link to 'https://ttraff.com/wix?keyword=a+huis+clos+pdf'. Additionally, a PDF link farm heuristic fired, suggesting the document is designed to host numerous external links, including a benign-looking PDF on Shopify. The presence of these links indicates an attempt to lure users to malicious infrastructure, likely for further exploitation or phishing.

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/wix?keyword=a+huis+clos+pdf
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/sample_of_acknowledgement_in_narrative_report_ojt.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/vuvoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/1793025418.pdf
    • https://cdn.shopify.com/s/files/1/0436/9154/0634/files/14062103639.pdf
    • https://static.usrfiles.com/ugd/b8c837_49f50439a2954bceb8847135f482ab26.pdf
    • https://static.usrfiles.com/ugd/b8c837_473ce8f7b28a4f4c85454c13738d994b.pdf
    • https://static.usrfiles.com/ugd/b8c837_d47b968410ec4bdb971c3ae1677395bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_51e65490c53b4a0c88aa030be9b7a340.pdf
    • https://static.usrfiles.com/ugd/b8c837_c89aa5002c7c46979440d512f1b8fc82.pdf
    • https://cdn.shopify.com/s/files/1/0438/9958/4680/files/onmyoji_arena_tier_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/9699/0115/files/japan_embassy_in_ethiopia_visa_application_form.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_off000060c0.bin
5a533f00bc60df5733bb1694b6508d7732a2d19a243db6c0b70641d8f7b353db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60C0 4504 bytes
font_01_sfnt_off00007012.bin
94276dab852054d92f92c27dbad7d62e67b3a3402dbf2887171dfd93d36879df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7012 10724 bytes
font_02_sfnt_off00009339.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9339 4324 bytes

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