Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfac2743a6c0c10a…

MALICIOUS

PDF

80.1 KB Created: 2021-02-26 00:21:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f05d73f36c7d28cdc9cdae06fb3740a SHA-1: 738dc1befa137133b9e323e3925e3c2b2978dcb2 SHA-256: bfac2743a6c0c10ae0e82985801f6042c613e5ee9eabc1f61b1c6f0bf8693a7d
96 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/strik?utm_term=how+to+say+thanks+for+your+quick+response
    • http://xevusezes.medianewsonline.com/14972404355.pdf
    • http://idealica-ufficialeitalia.website/jizubuwevomowedupo2335v.pdf
    • http://pixunune.sportsontheweb.net/sword_art_online_aincrad_-_edio_1_light_novel.pdf
    • http://newipufisatag.scienceontheweb.net/how_to_clean_the_jack_lalanne_power_juicer.pdf
    • http://faripofijukevom.mywebcommunity.org/what_is_the_weight_limit_for_fisher_price_baby_swings.pdf
    • http://letxxnx.org/hachiman_god_complex3d9ri.pdf
    • http://kyhni.site/rufezixepagoguvixalijedri5o.pdf
    • http://gosoxegekiri.mywebcommunity.org/duromax_xp4850eh_4850_watt_dual_fuel_hybrid_generator_with_electric_start.pdf
    • http://aycotoro7.xyz/how_to_find_your_piriformis_musclemu91w.pdf
    • http://car-den.ru/magewitekegigul1mc6.pdf
    • http://nigoguno.scienceontheweb.net/how_to_learn_trading_in_indian_stock_market.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vavabi/28601234279.pdf
    • https://s3.amazonaws.com/tutasujal/towalulek.pdf
    • http://faxiruvud.myartsonline.com/66684037184.pdf
    • http://ginowane.onlinewebshop.net/66807529451.pdf
    • https://s3.amazonaws.com/bupijila/13356456423.pdf
    • https://s3.amazonaws.com/belopudevuzuza/zoxak.pdf
    • https://s3.amazonaws.com/towutoginadivu/corsair_k95_platinum_xt_software.pdf
    • https://s3.amazonaws.com/zikeko/badrinath_ki_dulhania_songs_female_version.pdf
    • http://ligoroxenafof.atwebpages.com/xesafesewatejekerulisuk.pdf
    • http://mukanebesiva.atwebpages.com/32285773826.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_off0000fa91.bin
324c8105075a0a8b5bb797ceee6287d689aefe0bebe8f7afbdb44b38ecab690d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA91 5416 bytes
font_01_sfnt_off00010d16.bin
069f42031fe20e3df3d17221ac716c1a2cf4ca49f684e38268fe61f8d26aaa7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D16 11484 bytes

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