Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5133fe3ca1709a3…

MALICIOUS

PDF

87.9 KB Created: 2021-05-12 18:57:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a3e95d8733e8f51ad3c496a3ff0495e SHA-1: d65487216805df21e37b83271df0e6a1dcfa1462 SHA-256: c5133fe3ca1709a327747e817cc876b93df0256b51b07e49c0cc19f9100c8921
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to download a game. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the presence of external URIs and the nature of the lure suggest an attempt to trick the user into executing a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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=download+game+playboy+the+mansion+apk+mod
    • http://busijizi.medianewsonline.com/carmen_overture_piano_sheet_music.pdf
    • https://cdn.sqhk.co/gujamozulas/HihijhN/movie_night_food_ideas_pinterest.pdf
    • http://yogist.fun/gajafuxanezozokunavikklkv.pdf
    • http://eurofamily.pro/tuvonapizetabi4k4w9.pdf
    • http://vataponuxizeliz.mywebcommunity.org/roku_error_code_003_comcast.pdf
    • http://meetsoda.pro/adobe_illustrator_cs6_free_for_pct9wy3.pdf
    • http://1xbet-registr.site/genalobipikivagasozipobvxkf6.pdf
    • http://philonio.online/6140704309mih2g.pdf
    • http://usesalon.xyz/hamilton_beach_microwave_oven_walmartb9ptm.pdf
    • http://lemakomude.sportsontheweb.net/about_myself_in_english.pdf
    • https://cdn.sqhk.co/komifugu/djbKNEQ/7080077796.pdf
    • http://topstudy.fun/27345150836fvhua.pdf
    • http://artrosil.xyz/which_photoshop_is_best_for_beginners2c2ta.pdf
    • http://vatidenow.medianewsonline.com/zisaxibawozurubara.pdf
    • http://dotixomovi.sportsontheweb.net/34371624067.pdf
    • http://meetsoda.club/zigalenosorirufilobugocculk.pdf
    • http://easylearning.space/chevrolet_bolt_review_consumer_reportsxvw71.pdf
    • https://cdn.sqhk.co/niserutom/tTXXigZ/payment_services_samsung.pdf
    • http://poxumanavofeboz.scienceontheweb.net/guverixebetozisebev.pdf
    • https://cdn.sqhk.co/jekurona/dhifowK/big_bang_entertainment_pakistan_owner.pdf
    • https://cdn.sqhk.co/dagozuwemep/zaijhgi/duxalufowunabomaxile.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://megigezorozo.atwebpages.com/most_important_name_reactions_in_organic_chemistry.pdf
    • https://s3.amazonaws.com/satulibaren/2_times_table_quiz_printable.pdf
    • https://s3.amazonaws.com/matogapibelifiv/30148479504.pdf
    • https://s3.amazonaws.com/seriposuj/wedusus.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_off000102c2.bin
69efe41174567651d9a1a6e267c0d87610e323505cbd2e07415ffc9938dff549		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102C2 5676 bytes
font_01_sfnt_off00011602.bin
a3dca85b00f654ef8d90d3198bc8b8ed113d275a5eac83186e817b56794c1a0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11602 11104 bytes
font_02_sfnt_off00013c78.bin
d78d7cc1a68daa951b4fbccbcfb906d5a08ad384f187125596154666a45abe72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C78 16060 bytes

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