Malicious PDF — malware analysis report

Static analysis result for SHA-256 710db4eadbbf8c8b…

MALICIOUS

PDF

50.9 KB Created: 2020-10-27 11:48:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: eefee60e769f240990691aca169f0c91 SHA-1: 146ae5efb79a49010d284483743435fd1df7c316 SHA-256: 710db4eadbbf8c8b7b477eb2e8dcc02a54391029e469fa890194e0f7f3347178
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a malicious redirector link, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The embedded URL, https://ggtraff.ru/123?keyword=the+migration+of+the+negro+panel+no.+49+quizlet, is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains this URL, suggesting it is the intended lure for the user.

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://ggtraff.ru/123?keyword=the+migration+of+the+negro+panel+no.+49+quizlet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379736/normal_5f9451af6a471.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401505/normal_5f91483a48298.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416302/normal_5f977a2d6c4d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5f8737dbb454e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/cae3e3d8-8ed9-4af1-8c03-49ca4479cd4b/surom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae822065-afc2-4059-a92d-7a21a3764a97/14991968394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95d8fe07-b0a2-4c4f-9d09-57623e3a3c4d/wizoperori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0ce2430-7f38-4b10-8234-c916f50453cb/48928701789.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b0a46f5-268b-4d85-9a97-4c4a8f357047/72115073201.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/robot_arm_gripper.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/small_jpg_to_ppt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/241475a7-2b34-4320-b35c-72c685217898/woxoxonof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb47b530-6497-4364-9a71-dc1cd7505992/51486289679.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/417df311-a448-4a8e-876f-15cd6f415cfe/91081639107.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/704e9d1b-eeaf-4d65-a5e1-a7018b6973d2/24402764728.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/befd1ce0-c3e7-4075-99d2-a909b3f3ad0b/vilum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee5444be-114b-461e-8f84-0eee4f3a758f/sudoku_facil_gratis.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEF 5420 bytes
SHA-256: 2caa1e128eb212ec395a498e2add5cc6d7f4815eaf53fdd3683cbf87ce129aeb
font_01_sfnt_off00007f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F43 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off000087d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87D1 11708 bytes
SHA-256: 9fca4dbcf453964427439f7e78daaf335f3dfaa859a492c64bea0227abe41abf
font_03_sfnt_off0000af2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF2D 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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