Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f1a5427db171cb2…

MALICIOUS

PDF

79.8 KB Created: 2021-06-02 20:56:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5768b93c1c6c6f972e5030936853263a SHA-1: 4f711d7e53556643d1f395047d3dc47cfb3c2ffd SHA-256: 1f1a5427db171cb21ede4ba9befa7465e63b8c81b225369ce994e009932b7bb1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that likely lead to further malicious content or phishing pages. The document body, though heavily obfuscated, suggests a lure related to content aggregation or news.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1609290137cbd9---10041399202.pdf
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/6v6b4ff6cd80dfjk4995n7urgp/wajam.pdf
    • http://antifftech.com/uploadfile/file/%5C/2021050119094660.pdf
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/e297e190a8d856ff94257dc4e9eaf0d1/telidujiv.pdf
    • https://acronimocostanzo.com/userfiles/file/39002628881.pdf
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/753975e486d643e7d13cf4e54ce7f7a1/lisefebojipewubus.pdf
    • https://energooptima.hu/upload/File/90579065616.pdf
    • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/160b307616b193---85148120510.pdf
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c5eb2c30e3---tupizenojiloxajatukewa.pdf
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/qrhhp3njqb52i7frn4f5hsmp1p/sipigakutedobotekuwipidug.pdf
    • https://oteaexpert.fr/cite_imgs/file/61631566115.pdf
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/942a07e88382ee5bb0ffed2e111e2fbd/kuxafomisiwixen.pdf
    • https://emauto.lv/index/images/up/file/gatepubigina.pdf
    • http://altinay-law.com/images/file/23752285230.pdf
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/c0dq40vp52us9pqfvf9k9i8251/jijajotavefovititewaxap.pdf
    • http://sbnjl.com/userfiles/files/wufezis.pdf
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/5f0c4f6f7e3a98a7fbae1bd8d48c7a99/biwififu.pdf
    • http://sonkertrail.org/clients/9/92/9260a3c387aed4615f72c72c3a1da295/File/dokasinotikorovu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=does+starflight+like+sunny+or+fatespeaker
    • 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_off0000fcbe.bin
e76acc2f281deabd278b9d74c39d2785730f0e234385b696c6d71864ee93377c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCBE 5328 bytes
font_01_sfnt_off00010eec.bin
e3b583f40d5bb9bf45c5f13a44063e33b01b283059674be10ddaac26c5d1c182		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EEC 10156 bytes

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