Malicious PDF — malware analysis report

Static analysis result for SHA-256 61a8bfa562d5e0e6…

MALICIOUS

PDF

85.2 KB Created: 2021-03-21 09:02:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd548db0a4af3252f64a3269e1ce7573 SHA-1: 78d162ee834228f174e50bf6df3100f2a223b018 SHA-256: 61a8bfa562d5e0e69a23b00d912803235b26c0caf970b5dbf8b545817f7a234c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs to a domain associated with malicious activity, flagged by heuristics and a machine learning classifier. ClamAV also identified the file as a phishing trojan. The document body, though heavily obfuscated, contains keywords related to online movies and APKs, suggesting a lure for potentially malicious downloads.

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://mezovuduw.ru/wix?keyword=free+online+movies+2020+apk
    • http://pakirekugep.scienceontheweb.net/69244589563.pdf
    • https://puxanakiwe.weebly.com/uploads/1/3/2/6/132695454/katelikiparuvu.pdf
    • http://jushq.pro/piano_adventures_primer_theory_booklubzw.pdf
    • http://bonmarket.site/52652062131swerv.pdf
    • http://sfr-webmail.com/gegomojubigotiminufeduwufzg6fn.pdf
    • https://zavuvomexuwu.weebly.com/uploads/1/3/2/7/132740545/789c8d644ec8.pdf
    • http://pirojibanenuzi.getenjoyment.net/adjusting_entries_in_accounting_examples.pdf
    • https://gawujura.weebly.com/uploads/1/3/5/3/135325150/togazetarezevug.pdf
    • https://neloramobipetez.weebly.com/uploads/1/3/1/4/131407165/kiwizit.pdf
    • http://daxavepevepa.mypressonline.com/81650779282.pdf
    • http://raxejudesezix.scienceontheweb.net/tokyo_ghoul_release_date_anime.pdf
    • https://rezivunafotete.weebly.com/uploads/1/3/4/3/134354631/31714b4.pdf
    • http://damvglaz2.xyz/anatomy_of_the_constitution_preamble_activity_answersm27u4.pdf
    • http://jikusofare.mywebcommunity.org/texas_instrument_ti-83_plus_wont_turn_on.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mibofive.epizy.com/mandated_reporting_in_pa.pdf
    • https://uploads.strikinglycdn.com/files/797be0cf-3d8e-4a2b-a1c3-e2cbb35c20b8/12409391441.pdf
    • http://sukujarodapix.rf.gd/64870248490.pdf
    • https://uploads.strikinglycdn.com/files/02e37b7f-5e3a-4698-81a3-e0459bd3a998/what_is_a_plaque_score.pdf
    • https://uploads.strikinglycdn.com/files/e9e27dbc-7c74-4188-8d8c-ecad050b155f/this_blessed_house_plot_diagram_quizlet.pdf
    • http://webinurerebalo.rf.gd/dajuwijetobavipiselubiwa.pdf
    • https://uploads.strikinglycdn.com/files/6684d37f-92c5-4b6e-afc3-f035abc75f2e/68483535191.pdf
    • https://uploads.strikinglycdn.com/files/2cd91073-e9ad-4dd6-a6a3-ca1b430348d1/repewulojumifujowil.pdf
    • http://wubezirinipo.epizy.com/60771736159.pdf
    • https://uploads.strikinglycdn.com/files/14aeb97d-af68-47d6-8ae4-b3c4082606cb/who_killed_simon_in_one_of_us_is_lying.pdf
    • http://tefopikov.rf.gd/mapeduduxinidarer.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_off00010ef2.bin
8284ced5cab4430d64ff83089d28152a40200b8b436fd7b2e19cb43bb379686e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF2 5320 bytes
font_01_sfnt_off000120f8.bin
103187e736181e8f0cf9c33266efb6bb0b1ec1a44ffafc632d5f9b36e854015d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120F8 11316 bytes

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