Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f4d2bdccfa63a4d…

MALICIOUS

PDF

71.7 KB Created: 2021-02-17 13:20:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 26048bf270763c9e48581986f89e70f4 SHA-1: 37dac0f0fe742098b3faa0ee64f78e219c319fbc SHA-256: 2f4d2bdccfa63a4d16e34fbe41a7decf80ae96dd6538113838c78886eb377885
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing page or download further malware. The document body, though heavily obfuscated, suggests a lure related to thermostat calibration to entice users to click the malicious link.

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://maypoin.ru/123?utm_term=how+to+calibrate+vivint+element+thermostat PDF link annotation
    • http://zesigosaf.22web.org/acid_rain_information_for_students.pdfIn PDF document text
    • http://organicnu.info/zaketebupekx6uo.pdfIn PDF document text
    • http://zovanatul.iblogger.org/63938222434.pdfIn PDF document text
    • http://onenature.space/learning_spanish_like_crazy5en0f.pdfIn PDF document text
    • http://kaxunatinoti.iblogger.org/cipherlab_rk25_user_manual.pdfIn PDF document text
    • http://govnosiakxws.online/estadstica_para_dummieso7ehe.pdfIn PDF document text
    • http://pl50off.info/xelujipc1fs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/garrett_ace_250_metal_detector_price_in_india.pdfIn PDF document text
    • http://mujawonevafo.rf.gd/autocad_bed_blocks_dwg_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/zepuvinimewifekowokutexew.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/la_campanella_piano_sheet_imslp.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/softether_vpn_android_github.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/83539662341.pdfIn PDF document text
    • http://bapinusajix.rf.gd/xagupusovol.pdfIn PDF document text
    • http://wuvadofer.epizy.com/conduction_heat_transfer_nptel.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/25741743105.pdfIn PDF document text
    • http://namegudobilud.epizy.com/87013210895.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/6063398540.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/fixed_assets_schedule_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/13943060705.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_off0000d937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD937 5292 bytes
SHA-256: 7402e5672e0af0412182b5ebc1db47f1707ebd87eccfe9bc1971aa718a0155ce
font_01_sfnt_off0000eb22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB22 10696 bytes
SHA-256: 7d7302b5af2f73eb221887ceef40c3cc29747215bb2c64c8d6880231fe4635a6

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