Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b7366ebb88d3926…

MALICIOUS

PDF

86.8 KB Created: 2021-03-19 18:22:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f552975ba0909c6594f930a71a957ae SHA-1: 762d29fcb59114ac63ace6dac142a43399f12ee0 SHA-256: 2b7366ebb88d392641279360bcc7685cd6f349e93410df2182300e063b8602a1
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains keywords related to educational degrees, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xezojetit.ru/strik?utm_term=school+psychologist+degree+schools
    • http://italiabeach.space/tutafafzis1.pdf
    • https://gipazekafasulal.weebly.com/uploads/1/3/4/6/134600210/4030253.pdf
    • http://coolvdomaion.online/472717600284eip0.pdf
    • https://cdn.sqhk.co/vufisolepu/v1UggeU/zefokutevefalafikefixa.pdf
    • https://static.s123-cdn-static.com/uploads/4365563/normal_6009a23b816cf.pdf
    • https://fobopogukigu.weebly.com/uploads/1/3/4/3/134366855/barizixalidifo.pdf
    • https://cdn.sqhk.co/pimabosi/gdjh82F/nodar.pdf
    • https://cdn-cms.f-static.net/uploads/4471996/normal_60215764029e5.pdf
    • http://e-devletodeme.net/61396426392u5o2t.pdf
    • http://vupirure.22web.org/learn_korean_hangul.pdf
    • http://yourlivehelp.com/duvakupofanubelalowejycsb8.pdf
    • https://cdn-cms.f-static.net/uploads/4413126/normal_5fd78af9860b2.pdf
    • https://static.s123-cdn-static.com/uploads/4446045/normal_5fee315edbab7.pdf
    • https://cdn.sqhk.co/libobivole/jcuahca/guilty_gear_strive_character_select.pdf
    • https://cdn-cms.f-static.net/uploads/4377115/normal_603d29f1108d1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://janodabo.epizy.com/32883011992.pdf
    • https://uploads.strikinglycdn.com/files/a27be446-2095-42c6-b05c-79f3d35e15d4/60222544180.pdf
    • https://uploads.strikinglycdn.com/files/ce8d2b29-e750-4628-87fb-e92e2ab047c7/find_best_price_amazon_europe.pdf
    • http://nugafafekovad.epizy.com/bakkhali_full_song.pdf
    • https://uploads.strikinglycdn.com/files/f0a5e428-a795-4bce-ba29-34ba7eab8492/what_cheese_is_ok_on_mediterranean_diet.pdf
    • https://uploads.strikinglycdn.com/files/8a703b01-bb91-466a-bcbb-d69942d54c32/34013291594.pdf
    • https://uploads.strikinglycdn.com/files/f1a83be0-b82a-4c80-b56c-7de8c4bdd045/52231243165.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011573.bin
a3f5084dc09bdbd72bf523249d44df319edc4e28c90d3d4a27954ab8cfee35d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x11573 5328 bytes
font_01_sfnt_off00012796.bin
e20ab64e2a4b9fc03457c07d3c9ae5486590dc914195abadc38f5d8a8e9761ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x12796 11160 bytes