Malicious PDF — malware analysis report

Static analysis result for SHA-256 aebba05fd133ed57…

MALICIOUS

PDF

82.7 KB Created: 2021-03-09 23:12:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1daf00bcf2bce225aa18ff0131de230d SHA-1: b5c0deff5ac0d5e99e67ba7c81de908c63bd19ed SHA-256: aebba05fd133ed57c3edbd56774bd4e71560355948a5706175ba005948541634
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely to host a phishing page or download further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to search terms, aiming to trick users into visiting the malicious URL.

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://jumiwimov.ru/strik?utm_term=10000+reasons+chords+key+of+a+pdf
    • https://cdn.sqhk.co/dugelabomaw/Yigjbig/80187314432.pdf
    • https://cdn.sqhk.co/karopepagu/2ghpibA/31722257246.pdf
    • http://barbanapoli.moscow/89638126838qigoo.pdf
    • https://cdn.sqhk.co/xuwutiro/gibYijc/swing_lowe_sweet_chariote_movie_cast.pdf
    • http://perevod24-card2card.site/lol_camille_jungle_guidejrzxh.pdf
    • http://parhelifrl.space/burger_king_coupons_bis_junibq4uy.pdf
    • https://cdn.sqhk.co/rasepotobami/hmiftJK/table_tennis_bats_review.pdf
    • http://complerbnp.com/the_perks_of_being_a_wallflower_movih8pfm.pdf
    • http://barcaporirternet-interbank-pe.com/disco_zoo_patternspsmpc.pdf
    • https://cdn.sqhk.co/zupodejadofe/hib7Wia/old_blade_irons_for_sale.pdf
    • https://cdn.sqhk.co/mumeriretepi/hex6hgT/74887634361.pdf
    • https://cdn.sqhk.co/xuxiropuwomo/JjbfWhi/8731380494.pdf
    • https://cdn.sqhk.co/korebuxaguz/jnTifLv/89253654379.pdf
    • http://byseles.xyz/vuzexolamovikygc4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wusigipufuvowix/compustat_north_america_user_s_guide.pdf
    • https://uploads.strikinglycdn.com/files/83c9b236-92d5-4ac7-83ae-bf85fadddffb/redafedemumugajetibirebej.pdf
    • https://uploads.strikinglycdn.com/files/09073762-b286-4205-a622-a2ff9ba56cca/what_games_can_i_play_with_ipega_controller.pdf
    • https://s3.amazonaws.com/fokapikow/dstv_tv_guide_fox.pdf
    • https://s3.amazonaws.com/sixenogafopoj/80660915453.pdf
    • https://s3.amazonaws.com/bejeseja/99604397342.pdf
    • https://uploads.strikinglycdn.com/files/7f378926-ec1b-4623-b665-21fd9f2688c8/92489227376.pdf
    • https://s3.amazonaws.com/limepusotanal/62696626541.pdf
    • https://uploads.strikinglycdn.com/files/d48f7fb4-be96-40cc-a695-a69257ed8d93/10_facts_about_why_polar_bears_are_endangered.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb1d.bin
374c06ff47a550c3bdb02eed8bce1e5eabd517462ebe62a80b0133af4701b097		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1D 5476 bytes
font_01_sfnt_off0000fdc4.bin
ed58a73881fbc2957f5ff977aabaf23677fe59037cde6c81983d7ba403a397c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC4 11676 bytes
font_02_sfnt_off0001256e.bin
ebe5b5783a4a089a66ec00b4101e6709eeab49c95824abdde53ddf94d58fd438		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1256E 16992 bytes

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