Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c6d49de135b06f1…

MALICIOUS

PDF

75.4 KB Created: 2021-04-04 19:15:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c432802de0acc49efbe607e31f91083a SHA-1: e1b5be057bd355dbe38ca5f42377a7db8c58238c SHA-256: 7c6d49de135b06f16878ec3f8ec1a2d8fb8f73e401a2a474cef802557cb45604
124 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, exhibiting characteristics of a phishing lure. The embedded URL `https://jacksth.ru/award?keyword=lokmat+epaper+nashik+pdf` suggests a phishing attempt, likely to trick the user into downloading a further payload or providing credentials. The presence of invoice and callback lures further supports the phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jacksth.ru/award?keyword=lokmat+epaper+nashik+pdf PDF link annotation
    • http://carins.info/ti-84_plus_ce_charger_box4qez7.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/jiwogcO/23691662506.pdfIn PDF document text
    • http://grinallex.shop/android_notification_notify_idp2bc5.pdfIn PDF document text
    • http://excellent-spb.ru/abrsm_piano_grade_1_bookn8fey.pdfIn PDF document text
    • http://pezejij.mygamesonline.org/cetoacidosis_diabetica_gpc.pdfIn PDF document text
    • http://smilex.club/1-_888-_786-_4041ckzai.pdfIn PDF document text
    • http://epaytds.xyz/soundcraft_ui_multitrack_recording86wxw.pdfIn PDF document text
    • https://cdn.sqhk.co/puxezuxivas/1jfgcDz/text_art_characters.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopiroxab/hgR8ijD/project_management_meeting_agenda_template.pdfIn PDF document text
    • http://vodoroding.info/what_is_dog_mange_with_photosngsd3.pdfIn PDF document text
    • http://afracheat8.xyz/jedi_academy_no_cd_crackmw0wv.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://fishland.store/7_food_rules_michael_pollanub4ly.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/zumomasugipeno/68323636245.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/music_an_appreciation_8th_brief_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/drivers_ed_signs_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/baadshaho_movie_trailer_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/67930821119.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/32589876319.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/13217849157.pdfIn PDF document text
    • http://tigagatu.atwebpages.com/lte_ran_capacity_planning.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d57a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD57A 5252 bytes
SHA-256: 4f51f27e645c9150327b78a05db48d187e1e6c6ec0345be527d5bdec00094631
font_01_sfnt_off0000e72b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE72B 10640 bytes
SHA-256: 50dfe5ff35e645be162a4634444abf284d12e29c13bb3dbaa1aa31ddb4bd5916
font_02_sfnt_off00010b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B59 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e

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