Malicious PDF — malware analysis report

Static analysis result for SHA-256 387757aff62d44f5…

MALICIOUS

PDF

80.1 KB Created: 2021-03-15 17:28:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 113c89e9b8140f890a3508b5608659a1 SHA-1: d95cebd2c78f652677fef839f73ec3cdd11c0c4f SHA-256: 387757aff62d44f5431b70d1a9f2693132d5388b33a4016ba7b7d52aefc6c258
104 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that is flagged as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, contains indicators of urgency lures. The primary malicious URL identified is https://ponafet.ru/strik?utm_term=ronco+showtime+rotisserie+%2526+bbq+%2528compact+model%2529, which is likely used to deliver a secondary payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ponafet.ru/strik?utm_term=ronco+showtime+rotisserie+%2526+bbq+%2528compact+model%2529
    • http://niburufajanuto.sportsontheweb.net/satomanupopexijagalit.pdf
    • http://mon-cmbretagne.best/misivitarunemuxeratizasup6wx0n.pdf
    • https://static.s123-cdn-static.com/uploads/4393209/normal_5ffc0bf1a8db5.pdf
    • http://gipogup.sportsontheweb.net/bhagavad_gita_in_english_full_free_download.pdf
    • http://vazawujuzu.sportsontheweb.net/zefudusawumujuzubesidoji.pdf
    • https://static.s123-cdn-static.com/uploads/4465935/normal_60035aee9e9ab.pdf
    • http://7lessons.space/washington_football_team_free_agent_rumorsdz6ep.pdf
    • http://warowusavi.mywebcommunity.org/quickest_way_to_get_rid_of_poison_ivy_rash.pdf
    • http://nnorm-id.com/lia_informant_app8xtkv.pdf
    • http://lnstagrambusiness.com/zulidumayl528.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://terojujulemon.rf.gd/wulasipatidi.pdf
    • https://uploads.strikinglycdn.com/files/d961b7c1-8778-4687-8a49-a739e5d7e8ee/motorola_talkabout_t100_range.pdf
    • https://uploads.strikinglycdn.com/files/5b5302a9-d52e-42aa-87f7-b882ddb9e5a1/silirefivemilagi.pdf
    • http://nokenamepewu.epizy.com/zabab.pdf
    • http://vebusatoro.atwebpages.com/laser_beam_welding_process.pdf
    • https://uploads.strikinglycdn.com/files/57d385f6-9d19-4871-8266-76dd36b0bdf6/air_force_academy_online_classes.pdf
    • http://tuvilijemuze.epizy.com/dofufode.pdf
    • https://uploads.strikinglycdn.com/files/e21273ca-c340-4098-a96d-64d7f69a3e6b/how_to_pair_bluetooth_device_with_samsung_smart_tv.pdf
    • https://uploads.strikinglycdn.com/files/37a67738-2806-4cad-9044-d07a23db3777/how_does_a_nozzle_work.pdf
    • http://dimaninerif.rf.gd/penatoworekiw.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd33.bin
50b8ba7f4c0253a4947215b59ee528b7fef5fe509137a5b99117c8f1ab38f58e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD33 4896 bytes
font_01_sfnt_off00010dca.bin
e89681146bc2e1449c94396182d21b959adb366d7832cf3ca301f8cdd7015c06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DCA 10888 bytes

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