Malicious PDF — malware analysis report

Static analysis result for SHA-256 dedc915364614544…

MALICIOUS

PDF

77.7 KB Created: 2021-03-18 01:58:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 60678d074b773020ca63a035cb66c98e SHA-1: ef81ddb3424b492d1160e24fb60a54b28c633736 SHA-256: dedc915364614544f473332810db20114524788b085f10e9b079ba8f1fdced3f
96 Risk Score

Malware Insights

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

The file is a PDF containing a URL that is flagged as malicious by heuristics and ClamAV. The document body, though heavily obfuscated, contains text that appears to be a song title, likely used as a lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://mezovuduw.ru/strik?utm_term=cancion+vas+alimentando+el+amor+de+mi+alma PDF link annotation
    • http://tersq.space/suboridovafupuxot6x41h.pdfIn PDF document text
    • https://cdn.sqhk.co/salulilo/jhciioQ/halloween_pumpkin_coloring_sheets_print.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/hjhbhhg/friend_finder_facebook_android.pdfIn PDF document text
    • https://cdn.sqhk.co/nakusunegud/Sgfiecb/9583553391.pdfIn PDF document text
    • https://cdn.sqhk.co/kisereta/5id9gcs/light_it_up_like_dynamite_song_samsung.pdfIn PDF document text
    • http://creditscorefix.info/buell_xb12ss_owners_manual2v4v5.pdfIn PDF document text
    • https://cdn.sqhk.co/luwiwaduna/gfZ4ohj/bowling_championship_2020_3d_bowling_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae34082b-98ac-4705-afa7-a26695ddfe46/crosman_2100_classic_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bb161ad-5bf9-4cbf-8229-de8a8726985f/truearth_healthy_foods_case_study_solution.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8566cdae-ead0-4546-bd16-b97b90d9da5f/xuzamibabugilimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce97ba46-83a5-4ee1-8407-c95b887058a2/as_habl_zaratustra_friedrich_nietzsche.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/lagugosafemowivirema.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/beliefs_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87e9e4b1-59a4-437f-9105-a974ca860d67/what_intermolecular_forces_are_present_in_each_of_the_substances.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/xemosulatipagobirog.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/cathay_pacific_airways_ltd_annual_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a09796a-8786-4c3c-92e9-b6828e601767/73404398663.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e5508b5-1c54-45b2-a118-1396cb3f1d55/data_security_controls_checklist.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/29459675178.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/weight_guide_for_child_car_seats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f29f2f84-9b3e-4bfc-b89e-45f30dfdb896/craftsman_garage_door_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/dosuket.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/4594741290.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_off0000eedb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDB 5048 bytes
SHA-256: dff90b11e53f6c1b272504131486d797e8a8303345e8dcbcbec4841ff0318a67
font_01_sfnt_off0000ffef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEF 12376 bytes
SHA-256: 73f5c5491333806fc348bca1b52feaa82414fc67e364e75ae32eb6e25fd2bf9b

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