Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce64f87df38370c5…

MALICIOUS

PDF

86.2 KB Created: 2021-04-12 22:55:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 095d84c5b6bfe870d23e7dcafea93e99 SHA-1: 29c9be2433eef9057fa9798c53b96abf69fbb4a2 SHA-256: ce64f87df38370c515ad67edacdcbe7d55d67b7ee6d8f977fdefcc9230ba3953
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an external URI pointing to a suspicious domain, likely intended to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to fitness training, which is a common tactic for phishing and malware distribution.

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://ponafet.ru/strik?utm_term=how+to+train+for+pull+ups PDF link annotation
    • http://kodutizaga.mywebcommunity.org/toefl_test_practice_free_download.pdfIn PDF document text
    • http://zitirisiz.mywebcommunity.org/73171308127.pdfIn PDF document text
    • http://goligofalu.medianewsonline.com/32727418753.pdfIn PDF document text
    • http://kavakedego.scienceontheweb.net/census_method_of_data_collection.pdfIn PDF document text
    • http://kakorezikudu.mypressonline.com/strona_bierna_angielski_present_simple.pdfIn PDF document text
    • http://3bki.ru/pumenavoxudujowelirujedimr8ig.pdfIn PDF document text
    • http://relibafogat.sportsontheweb.net/52864908060.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/71930535478.pdfIn PDF document text
    • http://trendmobile.ru/best_automatic_transmission_repair_shop_near_mef3146.pdfIn PDF document text
    • http://pay-order.info/75614601839f5i9u.pdfIn PDF document text
    • http://fibisazorowax.mypressonline.com/cellule_de_crise.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.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/lawakux/mage_leveling_guide_vanilla_wow.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/87740451341.pdfIn PDF document text
    • http://tosabukevosubar.myartsonline.com/advanced_wastewater_treatment_process.pdfIn PDF document text
    • http://bebojivim.myartsonline.com/fifatizajapoxefinupu.pdfIn PDF document text
    • http://posikin.myartsonline.com/inteligencia_emocional_2.0_libro.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/56864075662.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/formatted_xml_viewer.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/dell_latitude_e6540_i5-4300m_15.6.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/vetojuninixezenidup.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/sky_movies_family_hd_tv_guide.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_off0001152e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1152E 4948 bytes
SHA-256: 141948a215d8d6110157a89d55c6204c25ee8b269e945b464985c4c4e9831f34
font_01_sfnt_off00012622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12622 10880 bytes
SHA-256: e10294c82253c522ff7e80a747f933eb0faae254b738a4ebfaacf013e08a7397

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