Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2df1512a0586660…

MALICIOUS

PDF

79.5 KB Created: 2021-03-25 16:24:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4793fba3b48b76c3710b83ccf9dbf922 SHA-1: aeb24d08db061a1b98a57c16f4c8c98cfa05dde3 SHA-256: c2df1512a05866607594e8e1b25e9749c4813f31c325fe2f385469ca3c875bbc
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a malicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with a high probability of being malicious. The document body, though heavily obfuscated, suggests a lure related to financial topics, likely to entice users to click the embedded link and download a further payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://bologen.ru/wix?keyword=understanding+how+money+works+pdf
    • http://topvideo.design/47329290844ye0l7.pdf
    • http://free-at.pro/what_does_sunshine_symbolize_in_a_dream7j66r.pdf
    • http://ig-about.net/84726406764a7f4x.pdf
    • http://oneplusonemain.xyz/outlandish_aicha_video_songyrt7k.pdf
    • http://antonioita.fun/12990357557uscig.pdf
    • http://glasshookahcatering.com/zilamewexapifardggj.pdf
    • http://dunetetemob.22web.org/nezuxolebujelejapud.pdf
    • http://copyrighthelpcentral.com/26401487307exqdr.pdf
    • http://naturebiolog.fun/92204303375ufwl9.pdf
    • http://revadadijavu.22web.org/valepimun.pdf
    • http://tameeniraq.com/how_much_does_a_typical_square_bale_of_hay_weighxo40k.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lupuvogotog/abs_plastic_properties.pdf
    • http://napezidemilolez.epizy.com/70881017047.pdf
    • http://jivobolalozula.rf.gd/nilizixewu.pdf
    • http://rarefovukafulu.rf.gd/wasekobodadinotu.pdf
    • https://uploads.strikinglycdn.com/files/08f4c594-e8b7-4ed1-9970-4750cfec487c/kolupewewomuge.pdf
    • https://uploads.strikinglycdn.com/files/102be493-8188-4290-8ead-20382456c17b/can_you_use_airport_express_without_base_station.pdf
    • http://vivuwiw.epizy.com/advertising_and_integrated_brand_promotion_7th_edition.pdf
    • http://fikenojidukozo.rf.gd/vipoboniginokodenez.pdf
    • https://s3.amazonaws.com/gatazeromij/81557112427.pdf
    • https://uploads.strikinglycdn.com/files/f7a35fa8-6029-4d21-a33f-7e0e0d766ac6/lurorikizosexuferujazixaw.pdf
    • https://s3.amazonaws.com/lunojol/champions_league_song_lyrics.pdf
    • https://s3.amazonaws.com/kefefetafij/91901438906.pdf
    • http://ferugasa.epizy.com/journal_el_watan_algerie.pdf
    • http://vatimofaxemog.rf.gd/92747200508.pdf
    • https://s3.amazonaws.com/gurafoga/free_coin_games.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_off0000f7e3.bin
003b77cc5f57ce21241c8d27d5cb0e43744d5698a6bf9c9a73f7409e2d3660f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E3 5672 bytes
font_01_sfnt_off00010b1f.bin
d9c18373f8d02d3789f7f2cabcc964d65bdb0a8828df1bccf478d2416d97ae9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1F 10944 bytes

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