Malicious PDF — malware analysis report

Static analysis result for SHA-256 2167c30012bd5414…

MALICIOUS

PDF

45.1 KB Created: 2020-10-01 22:30:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2bf1b12399cd0c85b16156f8d04d3aa8 SHA-1: d9436f14309d9d656486278f592dfd8a6744b229 SHA-256: 2167c30012bd5414668a38c1f9550ffc5ef5b3af10850c0b7e1218c3e21cc675
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URL that is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains a reference to the same malicious URL. This indicates the primary purpose of the file is to lure the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://cctraff.ru/strik?keyword=tutorial+swing+java+pdf In PDF document text
    • https://site-1037102.mozfiles.com/files/1037102/wudekebevikibew.pdfIn PDF document text
    • https://site-1037124.mozfiles.com/files/1037124/32599476696.pdfIn PDF document text
    • https://site-1036791.mozfiles.com/files/1036791/gifijepojofa.pdfIn PDF document text
    • http://mivijobop.modernsageevents.com/uploads/1/3/1/4/131454207/gevidodikuzote.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4d12963-4112-4bdd-875e-bdf66229a89a/69180121629.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6121f394-a9b3-4df5-a463-97594e7df5e6/26535747009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0469/0404/9824/files/padigavelakorofelozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/5385/5132/files/38037338516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/5834/4348/files/ball_screw_calculator_torque.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADA 5384 bytes
SHA-256: 58c68a81c99ef48461624044e8c38a1fddddfabc38f57c7de781f0776d26817f
font_01_sfnt_off00006d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D55 10760 bytes
SHA-256: 3810865e6b850633dbb694e460dd4eb2fa19a880c50941be89cbc8aa8e9a3f8a
font_02_sfnt_off0000926a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x926A 16096 bytes
SHA-256: 605d9e4239b974f6d9e1de1faf493610cf9608543c7c5495bf40ce0088b12bce