Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d581330be599b6b…

MALICIOUS

PDF

88.7 KB Created: 2021-04-11 18:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 8490067a915047ba1464db6626494218 SHA-1: dfc128684b7cf76031a0b01bf2352d2ba53b8dac SHA-256: 4d581330be599b6ba7d81ae23e62d9863296d118d9ce0f974092e24e1923fc01
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a suspicious URL, masquerading as a search result for educational content. This URL is likely intended to host a phishing page or download further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://seumenha.ru/strik?utm_term=john+dewey+philosophy+of+education+summary+pdf PDF link annotation
    • https://cdn.sqhk.co/motanunika/vidmjdM/19596281102.pdfIn PDF document text
    • http://jinevul.mygamesonline.org/cashflow_game_profession_cards.pdfIn PDF document text
    • https://cdn.sqhk.co/jemitaso/hjjbFjb/75850934942.pdfIn PDF document text
    • http://sogejovep.mypressonline.com/vegetarian_indian_cooking_with_your_instant_pot.pdfIn PDF document text
    • http://gupirigugorixuf.sportsontheweb.net/bejibevinipofu.pdfIn PDF document text
    • https://cdn.sqhk.co/pifonode/hhFhchg/sakako.pdfIn PDF document text
    • http://musomojil.mywebcommunity.org/84942673908.pdfIn PDF document text
    • http://mejuzuw.scienceontheweb.net/verb_tense_consistency_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/zatovafer/YhggiC5/20594901932.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/mutirexa/patofisiologi_neuroblastoma.pdfIn PDF document text
    • http://pupagerirawax.myartsonline.com/logitech_z_2200_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/1995_jeep_wrangler_rio_grande_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8ea2af7-0aa6-4073-a703-d8b63c81d438/de9_mailing_address.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/why_mosquitoes_buzz_in_peoples_ears_sequencing_activities.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ad73616-f452-4635-a655-9a8ca35640f1/16428769842.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16c317f1-c3d9-450b-9e75-a25ce35bc2d7/classic_fairy_tales_jack_and_the_beanstalk.pdfIn PDF document text
    • http://bagugexasorip.myartsonline.com/didetotemili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ea3458c-93e6-43e4-8555-c78d7cc0a5e9/nordictrack_rw200_weight_limit.pdfIn PDF document text
    • http://jisunopesaluzi.atwebpages.com/alphabet_board_games.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/witidepuzomu.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/amar_chitra_katha_telugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/499f516b-b652-4878-92e3-d30fae694033/onkyo_receiver_tx-nr525.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6beadb3-52ab-4c3d-8e99-27a3ad23d8fe/what_is_predictive_analytics_in_machine_learning.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_off00011d48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D48 5580 bytes
SHA-256: d0f9e0ee1127220a58acb8b8a424b0b56ad371fac0977e272959ee6d3db9d9fc
font_01_sfnt_off0001302e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1302E 10868 bytes
SHA-256: 7a6fa7a64c76cbf70598718b5fa5cfabdba1c721f5949b2b41dff1c71d8171a3

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