Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1c030f7fdba0cf8…

MALICIOUS

PDF

83.3 KB Created: 2021-05-16 13:11:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 4eceb5b26ec177d837c10b45577a00a7 SHA-1: 27b915531c2684617e5597b3fda3b85a14b74ff6 SHA-256: f1c030f7fdba0cf8300879cce18dd0735824f8a6f6a70d3c746b026e76727f2f
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 a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of a malicious URL within the document body suggests an attempt to trick the user into visiting a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gimoguvi.ru/strik?utm_term=how+to+plumb+a+rinnai+tankless+water+heater PDF link annotation
    • http://warewakeb.sportsontheweb.net/after_effects_shortcut_keys_free_download.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/takane.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/cvjfjba/road_rage_epic_shooting_garland_tx.pdfIn PDF document text
    • https://cdn.sqhk.co/pixefavenar/SjChjii/13148981005.pdfIn PDF document text
    • http://faxusupovetek.sportsontheweb.net/tufunetudanegagasu.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/96481412721.pdfIn PDF document text
    • http://sewakasatixori.medianewsonline.com/advantages_of_business_partnership.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/baxegezivumi/friend_like_you_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/fivebo/varnishncsa_custom_log_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b48fa447-b0f6-4318-bb41-ead3e5b8f627/49928515436.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/collins_connect_answers_aqa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08c898aa-bca0-45bf-aae2-7ac071e48922/juxowuzu.pdfIn PDF document text
    • http://purewowesajumu.myartsonline.com/takojewiwazenodu.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/how_to_start_heat_n_glo_gas_fireplace.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/95071736022.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/dujonanijifarumo.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/coleman_roadtrip_classic_grill_manual.pdfIn PDF document text
    • http://ruronegiseko.atwebpages.com/36020606674.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/74006070130.pdfIn PDF document text
    • http://penobugixova.atwebpages.com/jifuvavegulopef.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/how_do_i_control_the_volume_on_my_samsung_soundbar.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_off0001062e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1062E 5316 bytes
SHA-256: 3e2867c51e751fded012c234d015ed1f8ff35d20280a570131651e4af3cd7f95
font_01_sfnt_off0001181a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1181A 11132 bytes
SHA-256: 8d99798400169d91c9937e527ab18d742044d3b1abc2904b913abf651bee51cc

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