Malicious PDF — malware analysis report

Static analysis result for SHA-256 808a199317736647…

MALICIOUS

PDF

75.9 KB Created: 2021-06-07 23:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 34798e35ff37196170c4e85775db3c41 SHA-1: cf617e6092a0dc7cc9688a8e2156a4e38c06473c SHA-256: 808a19931773664754d9427026e357524b7452c64e959531371d2cbcc7175fdf
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 as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a search query, further supporting a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://crewmak.ru/pbw?utm_term=what+oil+does+burger+king+use PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473322/normal_604a24f0788cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369664/normal_603b995953849.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483103/normal_5fcb22ab7a29a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8416b520-9461-485a-a5ed-56d12213c06a/lectura_comprensiva_para_nios_de_segundo_de_primaria_para_imprimir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ef53f63-1459-4d81-b222-188c14f0278e/53516983307.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55f2af00-1477-48fa-9d34-8cd990999e6c/printable_fortune_cookie_sayings.pdfIn PDF document text
    • http://likanegi.pbworks.com/f/ratukikigakej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afe4e1b0-6243-4641-8dc3-93b69c063d0f/41987583323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29f62c12-ded3-422b-afab-b3596bcd1973/what_are_the_names_of_the_different_chess_pieces.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f5b36a8-ce2b-46c4-bf06-d50c6435f638/farewell_speech_given_by_students_to_teacher_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba987451-8eeb-44cd-9ed8-4e179e654266/vadatuvidexarurosamasebig.pdfIn PDF document text
    • http://rasetewi.pbworks.com/w/file/fetch/144668547/how_to_get_free_credit_report_from_transunion_canada.pdfIn PDF document text
    • http://kigiputilik.pbworks.com/f/sepifojimirulibebewes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34c1595a-2604-4ee9-a628-89571fe1b63b/how_to_change_rainbird_controller_password.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89ef2beb-b4b7-4d14-9733-d1c73a79a5eb/interactive_project_management_meaning_in_urdu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f625906-4bb3-454f-8854-dbc9ef02a4e7/66383411307.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cb0e254-963f-4634-acf2-ca8e4354188f/30767585203.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/354ff72c-3812-4622-b5f4-e02eb3a3c37f/39220529660.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4315c5e-2742-43cb-bc76-96a36e95b17f/how_to_get_mp3_to_itunes_on_iphone_11.pdfIn PDF document text
    • http://zapibibilubo.pbworks.com/w/file/fetch/144615861/21099694309.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43f2dbbc-7cbf-4355-9c8d-41907b5782a7/how_do_you_check_transmission_oil_level.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f07d8c33-1f1a-4dcb-9193-65a42252a405/11_day_meal_plan_1000_calories.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_off0000ea14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA14 5304 bytes
SHA-256: 3aafaac18c0c047426f862f0e085589977bc4b09bd5a7dd00df835188d5fe02f
font_01_sfnt_off0000fc1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1F 11084 bytes
SHA-256: ce04bb959000240905693e5df3426ca14cf4536041c52a6b13604a166919f8a9

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