Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cb6c340fbee10ac…

MALICIOUS

PDF

73.1 KB Created: 2021-02-28 04:11:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 7ccdeab6d376bf8ce62edb2ff45ce135 SHA-1: 92ad764b918f1552be53c13dee66346f6e48c8a7 SHA-256: 2cb6c340fbee10acf8a11461cea2b27aefecddaff59c293b42816d984c060f51
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, suggests a lure related to 'Lista de verbos regulares pdf en ingles'. The presence of embedded URLs and the nature of the detection indicate a phishing or malware distribution attempt.

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://vilenefex.ru/strik?utm_term=lista+de+verbos+regulares+pdf+en+ingles PDF link annotation
    • https://cdn.sqhk.co/bigulikexupa/dhjLCSq/fawiwupofosezixiwuz.pdfIn PDF document text
    • http://jikonuja.22web.org/korulitika.pdfIn PDF document text
    • http://sesigugakipezov.22web.org/antigona_kniha.pdfIn PDF document text
    • https://cdn.sqhk.co/fanoxozowupe/ccThfTi/hockey_stats_app_free.pdfIn PDF document text
    • https://cdn.sqhk.co/vuramufef/YwgAotI/70300402064.pdfIn PDF document text
    • https://cdn.sqhk.co/miburixegapu/QgdFjak/kofezamise.pdfIn PDF document text
    • http://mon-fortuneo.best/beer_pong_tournament_auckland_20205kr9v.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/lebejos/70815165670.pdfIn PDF document text
    • http://bepalekene.rf.gd/2008_polaris_sportsman_500_ho_wiring_diagram.pdfIn PDF document text
    • http://vadupeti.epizy.com/canada_red_cherry_tree_information.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/40885854334.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/14432790256.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/free_printable_checkbook_balance_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/spanish_frequency_list_anki.pdfIn PDF document text
    • http://bepukefaxefewe.rf.gd/bluestacks_android_emulator_windows_8._1.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/ola_cab_booking_chennai.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_off0000e05b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05B 5352 bytes
SHA-256: 6cb8e1fba893cc9b9b15769c59f76283e3e7049cb7c387e886c6dec7fd436040
font_01_sfnt_off0000f2a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A6 11072 bytes
SHA-256: c61924f4a90acc6334c95ab6d6a35e5d0d681c4714731db95fc6b3f7e2f32ab2

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