Malicious PDF — malware analysis report

Static analysis result for SHA-256 d18c12db2e979924…

MALICIOUS

PDF

73.1 KB Created: 2021-03-18 23:46:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 05c34dc1e9ec4e7fc9aad2f3e4208ed0 SHA-1: a6331f499048b435b69a78060c02dc8e8780955c SHA-256: d18c12db2e979924b44ef5fad2f41f1176203fe32240c965f937a3c265ba604c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of malicious intent. The ML classifier and ClamAV detection further support this assessment. The document body, though heavily obfuscated, appears to be a lure related to popular media, aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jumiwimov.ru/strik?utm_term=attack+on+titan+wallpaper+eren+mikasa+armin PDF link annotation
    • http://bapatavusirave.mygamesonline.org/aircraft_engine_monitoring_system.pdfIn PDF document text
    • http://wineninuxusafu.22web.org/podaremivesutozeru.pdfIn PDF document text
    • https://cdn.sqhk.co/begokaxawip/cFfQfic/boxing_star_game_wiki.pdfIn PDF document text
    • http://vumogegotawugub.mypressonline.com/46762138423.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/best_sunglasses_for_sensitive_eyes_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/betarudigi/eXhdeij/throne_of_glass_tv_series_update.pdfIn PDF document text
    • https://cdn.sqhk.co/solijisivono/3iagdid/sakupanakulusaliludutugen.pdfIn PDF document text
    • https://cdn.sqhk.co/garisuvonuk/fhaI5Ju/real_wedding_makeover_salon_game_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fogobewataja/jiHjfDF/odyssey_turbo_runner_quad_drone.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/fixararololu/ancient_indian_history_in_marathi.pdfIn PDF document text
    • http://kitilogokufalu.atwebpages.com/heart_disease_treatment.pdfIn PDF document text
    • http://sufelubunat.epizy.com/59531792506.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/nowolirogegug.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/free_printable_worksheets_comparatives_and_superlatives.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/42631314836.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/lidapoxe.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/jatimojomafi.pdfIn PDF document text
    • http://wexevojejig.rf.gd/cg_dj_video_song_3gp.pdfIn PDF document text
    • http://xewojof.rf.gd/cinderella_and_four_knights_full_ost.pdfIn PDF document text
    • http://jevabatogi.rf.gd/international_dialing_codes_list.pdfIn PDF document text
    • http://livirava.atwebpages.com/sutojowevepibubolino.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/pomevuzadusujeniziwuju.pdfIn PDF document text
    • http://xadamun.epizy.com/xawusevupimitepatog.pdfIn PDF document text
    • http://vobafuge.epizy.com/41371167561.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_off0000de79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE79 5224 bytes
SHA-256: 50a73d968d40c50530827cbfa4e0de3ffc488a0cad47c05ef8881512d2abe3b4
font_01_sfnt_off0000f03c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03C 11652 bytes
SHA-256: 1ac0e4ca052eaec8594406545aa0cc266d2fca05ad4e507ea3c305f1e2b1ab0d

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