Malicious PDF — malware analysis report

Static analysis result for SHA-256 f95a156763d89e53…

MALICIOUS

PDF

74.0 KB Created: 2021-01-26 01:13:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 37dc3637a5b21e52cc71e8be154b04eb SHA-1: 181cb62ef3fea51e50e28e14acaca22e3612e4c7 SHA-256: f95a156763d89e533b51a87750e0b2da2acfd963928c000afe2e22f56e6af4d6
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a URL that appears to be a lure for movie downloads. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/aws?utm_term=alone+full+movie++480p+bolly4u PDF link annotation
    • http://muvibigi.22web.org/bruchrechnen_aufgaben_6._klasse.pdfIn PDF document text
    • http://dewobazul.22web.org/idm_crack_6._33_free.pdfIn PDF document text
    • http://rozefuzapotor.iblogger.org/28602165152.pdfIn PDF document text
    • http://rajedat.iblogger.org/shamisen_piano_sheet_music.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mojofukiw.epizy.com/79514513293.pdfIn PDF document text
    • http://livukuxuperum.epizy.com/rch_guidelines_congenital_hip_dysplasia.pdfIn PDF document text
    • http://vajipiposugeto.rf.gd/54308107490.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/bass_boost_spotify_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/chevy_colorado_diesel_performance_chip.pdfIn PDF document text
    • http://rojaxenutu.rf.gd/biostar_g41d3_motherboard_driver.pdfIn PDF document text
    • http://tatovod.epizy.com/mapa_mundi_para_imprimir.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/excel_bedingte_formatierung_bestimmter_text_oder.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/11509385709.pdfIn PDF document text
    • http://xuvatifovefad.epizy.com/selorekifufuwekez.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/python_format_code_for_str.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/mezivuwi.pdfIn PDF document text
    • http://tobobuximalusu.epizy.com/temaxatapos.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/10881619076.pdfIn PDF document text
    • http://zerakunutage.epizy.com/radutebewawukoguso.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/44571563403.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/pazin.pdfIn PDF document text
    • http://zepedijuva.epizy.com/bluetooth_video_full_hd.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_off0000e44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44B 5280 bytes
SHA-256: c4e3a3aae4b58d00eb64b2baee0b2204a83eb05dc018c7a6b51f247bdee9f113
font_01_sfnt_off0000f64e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF64E 10656 bytes
SHA-256: f5574b2841610e30f674bf9e53e70f356b281bf1aa82fe3b93fabf7cccc6e66e

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