Malicious PDF — malware analysis report

Static analysis result for SHA-256 606ba467b4ff83aa…

MALICIOUS

PDF

90.0 KB Created: 2021-06-05 03:49:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 427d233a3f87d9506db88c97321b00d3 SHA-1: 4a52afd190bd28fb1ad271f4b4c04a19218b8630 SHA-256: 606ba467b4ff83aa7cfd1a64c4318bc077fd4c1542d569f86815af5877b2ba99
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'oniceh.ru', which is likely used for phishing or to serve a secondary payload. The document body, though heavily obfuscated, suggests a lure related to 'Mi propio auto chapter 9 questions', implying a social engineering tactic.

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://oniceh.ru/pbw?utm_term=mi+propio+auto+chapter+9+questions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370286/normal_6010aedbe9b22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_606924ef3c597.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412408/normal_60356eb2a27b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380545/normal_601342af1ef53.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460708/normal_5ff4031db3e97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413851/normal_5fd1e9b5576dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480905/normal_60166fcf9e240.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/d5cacbef-6b17-40cd-9d5b-52f9428879c1/83406093510.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c4eaeee-b8ce-4efd-b942-8078b19a3d18/unit_6_the_great_depression_and_new_deal_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5637a514-d582-4c0e-a681-efe3f8807991/do_australian_cattle_dogs_have_a_double_coat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/521540df-8f48-4636-af6d-e167b406681e/how_much_does_a_mass_communications_major_make.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f2f909e-7d98-496c-85d3-ae5114d89bef/97190929189.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b2f0f85-00b2-49d4-a43b-ff3f4f369bd2/operaciones_con_funciones_racionales_ejercicios_resueltos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99f755d4-e06c-4521-9c4f-48ade92e61f3/gumunu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e45953f-3f68-4080-8518-053dd4650401/how_much_do_nurses_earn_in_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d47834f5-732d-44a3-8a29-2bdde708635a/59104778717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c91237c5-b0e7-4afe-af31-415703a06d1c/how_to_write_a_letter_of_recommendation_for_student_teacher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf891f59-ede3-4aa5-bd4c-765dbbb00dc8/dezopejijudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf0aed7c-15b4-4dd7-932b-2313efaa2a8b/how_is_uncle_iroh_connected_to_the_spirit_world.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b040648d-6cd8-4921-9a1d-bb288d7ec7f6/dulenorununujurisibevis.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000110dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110DC 5156 bytes
SHA-256: a85633f8a44ae730eb3aa36aa9a3621407e0f89d9aaa8ec4bf83a7306e71b0b1
font_01_sfnt_off00012261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12261 13136 bytes
SHA-256: 3407bb99246fd797091fe8dfadfff319ec5d7e9b8667615ccd2bf130614cd659
font_02_sfnt_off00014ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CA3 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.