Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c90dc70f865aa1c…

MALICIOUS

PDF

76.7 KB Created: 2021-04-05 00:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 367657bbbfe1b1e16f26352448f80e9c SHA-1: 6e35f218a0b9f2c3c29fe9327a3a25ae35cb2a71 SHA-256: 0c90dc70f865aa1caed7e2559ac247d70f10fdc54c652c2154a59577d1bf85ca
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, pelibifir.ru, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains keywords related to the URL, suggesting a lure. No scripts were extracted, but the presence of external URIs and the overall malicious verdict strongly suggest it's a phishing document designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/award?keyword=hormona+antidiuretica+vasopresina+pdf
    • https://pivatebovuwize.weebly.com/uploads/1/3/0/7/130775292/julazazovem-xolojezar-weborexamefemaw-jakezibu.pdf
    • http://ukranews.site/boss_audio_bv9386nv_updateei52g.pdf
    • https://kapumalozaz.weebly.com/uploads/1/3/4/8/134892255/d16ad3c821b625.pdf
    • https://damujulul.weebly.com/uploads/1/3/5/3/135335913/wenogaze.pdf
    • http://dowezujuzuzos.22web.org/mujibarejebaroluvenox.pdf
    • http://housefashion.ru/puzelodatanufutuxojaboge3ksw1.pdf
    • http://jazeforip.22web.org/letter_writing_format_for_school_admission_request.pdf
    • https://zutiwemozebej.weebly.com/uploads/1/3/2/7/132712207/kexexaxatefezotin.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kogusox.epizy.com/samurai_sword_fighting_sport.pdf
    • https://uploads.strikinglycdn.com/files/f2495987-f1cf-49de-b8c5-c59e0f11b473/can_alkaline_diet_help_acid_reflux.pdf
    • http://refewededuxita.epizy.com/sales_meeting_agenda.pdf
    • http://lipidusixul.rf.gd/vegozoreresinatawefedid.pdf
    • https://uploads.strikinglycdn.com/files/1da9a6ba-a5f4-42a4-b5ce-27c164469f73/hagen_hg_fluval_fx5_fx6_motor_unit.pdf
    • http://gazinuxifo.epizy.com/kijemogezemutabi.pdf
    • https://uploads.strikinglycdn.com/files/d7d24770-b614-434f-87b3-392141a594fd/indian_coast_guard_assistant_commandant_medical_standards.pdf
    • http://kirorewomomi.rf.gd/biblical_hebrew_course.pdf
    • http://dubaduvuk.rf.gd/anonymous_report_to_cps_texas.pdf
    • http://tijexaxa.epizy.com/angularjs_2_interview_questions_tutorialspoint.pdf
    • http://gemixeferakin.rf.gd/gopitizajisiwilisagojure.pdf
    • https://uploads.strikinglycdn.com/files/ebdce7a6-f8a6-4246-981a-e196cb23c314/can_you_get_ecg_on_apple_watch_3.pdf
    • http://xodojekupelofit.rf.gd/85259699620.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_off0000ebce.bin
5615a27bc9589cffa651b02fd1106c2d19058812bb31e2f20cdb35cd346fac6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCE 5288 bytes
font_01_sfnt_off0000fdba.bin
3d8fdd3ada4e3dd1560567377ad5fa0b716c6444b749adb11091ab3e5b36bad7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBA 11452 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.