Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df0831f67e7f5fe…

MALICIOUS

PDF

75.5 KB Created: 2021-04-05 22:14:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c1a2ff65af92c70c5acbe291dca0dd3a SHA-1: 07c2d1f70f7dd959a41f8ec7b884978ab420b3f2 SHA-256: 6df0831f67e7f5feb01278bb4aaca697b0c8315c99bdef113634631e4765ad9b
136 Risk Score

Malware Insights

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

The sample is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains heuristics indicating a payment redirection lure, suggesting a phishing attempt. The embedded URL `https://xezojetit.ru/strik?utm_term=plantronics+voyager+legend+5200+bluetooth+headset` likely leads to a phishing page or a malware download. No scripts were extracted, but the PDF structure itself is indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://xezojetit.ru/strik?utm_term=plantronics+voyager+legend+5200+bluetooth+headset PDF link annotation
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://presentinsta.online/xifiperuretaxedigowiehz4t.pdfIn PDF document text
    • https://cdn.sqhk.co/famazipow/jbejjmF/basketball_slam_dunk_gif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487432/normal_6067eccb652bc.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://podcard2020.site/captain_marvel_4k_trailery0tgl.pdfIn PDF document text
    • http://50offstore.pro/feserikiluteh9b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379856/normal_5fc8d211c9040.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374685/normal_6059d4cf8f8b5.pdfIn PDF document text
    • https://cdn.sqhk.co/pibusupi/dYRVhir/molina_marketplace_insurance_phone_number.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375093/normal_60478d4ba7f95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422367/normal_604b03bf9b802.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407664/normal_5fc7ff55d05f5.pdfIn PDF document text
    • https://cdn.sqhk.co/movijomo/5uP5YKH/funny_videos_of_dogs_barking.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/nakevoja/xosibefizukerasozifaza.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/72875676356.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/how_much_is_an_antenna_at_walmart.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/wajutediluzekunolubebek.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_off0000e802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE802 5904 bytes
SHA-256: 7a656ff2fec161f7d00dbe406166822aea7c3958f75fb5fa98d53e25b95123d8
font_01_sfnt_off0000fc1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1C 10808 bytes
SHA-256: f87cb2c04882eecd56764051452607448b9a5df7461ec106c89ece04e5976ad9

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