Malicious PDF — malware analysis report

Static analysis result for SHA-256 e41a4de47ec08373…

MALICIOUS

PDF

184.6 KB Created: 2020-10-02 09:53:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: bff4bb525545244bea8ff65df4ae8187 SHA-1: 755c13988f1f55cc1ea88e4dc512de0977469488 SHA-256: e41a4de47ec08373481af9ac8630ff3fe2c1d2da943c7a33d22fd1e9d3d315a5
94 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified as a redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to a "Sorcerer pathfinder guide". The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links indicates an attempt to lead the user to a harmful destination.

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://ttraff.club/pify?keyword=sorcerer+pathfinder+guide In PDF document text
    • https://site-1036649.mozfiles.com/files/1036649/jezabakubogunifa.pdfIn PDF document text
    • https://site-1037266.mozfiles.com/files/1037266/79768556784.pdfIn PDF document text
    • https://site-1037241.mozfiles.com/files/1037241/tezelago.pdfIn PDF document text
    • https://site-1039355.mozfiles.com/files/1039355/kavenalotof.pdfIn PDF document text
    • https://site-1036920.mozfiles.com/files/1036920/74287488384.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/7aa1eeae-a406-4a10-a53f-b5e9f4451101/36997472615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8cab18d-79d0-44c5-a086-2bc2b9c31672/51375115744.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d655353-a57f-485d-b012-4278b3f55743/93361133451.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d58507d-92a6-42ea-805a-fe0f2313ea3a/nowuwinelumufixudube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52c9dd29-fd7e-48fa-92c7-937a0d1bb9e0/gimejepiwilitub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b305529e-6293-43cd-8b94-b967d182d58e/jotonabufiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f6b6db7-6d32-406c-8973-a46c8bf43c3b/67084984759.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00029f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29F5E 5312 bytes
SHA-256: ac2754588b77a40378dc9850674d0a0a6e9dce339bacee9f47fe48050a1aaa86
font_01_sfnt_off0002b16d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B16D 10440 bytes
SHA-256: c2f3cee862ceaa00bb2f52c17cb2373da75276f1fb3702899ffb36f9568db7dc