Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c91ab18dbbbfed…

MALICIOUS

PDF

44.8 KB Created: 2020-10-01 15:32:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76e2e3c6aeb5798ca473bbe071bfd4d8 SHA-1: 5267ec934353ed8884dfa3eb5c31811fe7ad3589 SHA-256: 92c91ab18dbbbfed697dc712622a83f555ab27a108031088f69e57e59c99a8f2
60 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to a URL that is likely used to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The file type and the presence of a redirector link suggest a phishing or social engineering attack.

Heuristics 2

  • 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.
  • 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://gettraff.ru/strik?keyword=understanding+and+using+english+grammar+chartbook+a+reference+grammar+pdf
    • https://site-1037916.mozfiles.com/files/1037916/vamapekaxeredaxid.pdf
    • https://site-1037175.mozfiles.com/files/1037175/90223209981.pdf
    • https://site-1036932.mozfiles.com/files/1036932/norul.pdf
    • https://site-1037169.mozfiles.com/files/1037169/91436472519.pdf
    • https://site-1036635.mozfiles.com/files/1036635/gumabuwekedafeworoso.pdf
    • http://files.jillianbretzdoula.com/uploads/1/3/0/8/130813696/8056509.pdf
    • http://files.lifechurchaz.net/uploads/1/3/2/3/132303270/439fcd56635.pdf
    • http://tadomo.backstageatthebeach.com/uploads/1/3/1/4/131437130/guxogofajepivizejeni.pdf
    • http://ginudoz.neokundalini.org/uploads/1/3/2/3/132303338/wewoxakawele-nogoxuv.pdf
    • https://site-1036779.mozfiles.com/files/1036779/20519172326.pdf
    • https://site-1037156.mozfiles.com/files/1037156/misipufita.pdf
    • https://site-1036980.mozfiles.com/files/1036980/91279043952.pdf
    • https://site-1037202.mozfiles.com/files/1037202/dununalufubelidugoduwal.pdf
    • https://site-1037245.mozfiles.com/files/1037245/4120718343.pdf
    • https://site-1036779.mozfiles.com/f
    • https://uploads.strikinglycdn.com/files/b35bd73b-bdfc-48a2-ac90-9c59453e42c0/lunodijuk.pdf
    • https://uploads.strikinglycdn.com/files/57264d1b-2d09-41c1-bdab-d9bce5f29148/fepud.pdf
    • https://uploads.strikinglycdn.com/files/e5b79112-288d-4dc2-a61a-c181c2300df2/vopijimusu.pdf
    • https://uploads.strikinglycdn.com/files/e1461157-1fd6-4528-8629-652d6feba415/49116139159.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_off00005d0a.bin
bd05afc651a6e997d79f5a617c1c5bf579ed0c92209dc7a4a9610c40c4e318dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0A 5648 bytes
font_01_sfnt_off00006ffd.bin
42295ac92f0eaa1731ed5b04b82c9b03db564402f06eb95c4a00dc1d0111f946		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFD 13364 bytes
font_02_sfnt_off000096a2.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96A2 4324 bytes

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