Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c7b836f4be02979…

MALICIOUS

PDF

74.2 KB Created: 2021-05-23 04:54:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: bddc5bb71af6ea34cb6ce5ea1ec86760 SHA-1: 708240a66b3f8b2f9220b6f199ce27c7b4893f84 SHA-256: 7c7b836f4be029794346fe5a40e583fd9cc55d7044a53a75eb832f94a427a589
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://seumenha.ru/strik?utm_term=kpss+tarih+konu+anlat%25C4%25B1m%25C4%25B1+indir PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4415524/normal_6007ed28d6422.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379363/normal_60028a91bf887.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382782/normal_6038292ef3db7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446761/normal_5ffcd7832a080.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://s3.amazonaws.com/pogolo/60631307258.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/tracheostomy_care_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/affidavit_template_florida.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/jofezulosug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/673865fb-12fd-4078-b7c6-0907aea40d74/35611560357.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea62fc64-bb11-41e0-b9f8-e8e6362485e6/97153522179.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/portfolio_template_illustrator.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/1824098613.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00c0475e-0193-4097-8630-fa1315b8d597/scholarly_articles_on_sex_education_in_public_schools.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/la_divina_comedia_dante_alighieri_libro.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/59575213958.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69ff956a-55d4-4570-87a3-5092ab41187b/xiwijidajij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abeb544e-4617-4700-9231-9a9f2f886836/is_fl_studio_a_monthly_payment.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/72056677439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb285ed1-2a0d-4031-a9e6-bef3eef1cbac/2015_chevy_malibu_led_tail_lights.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/employee_performance_evaluation_sample_comments.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/what_is_long_and_hard_joke.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/free_printable_appointment_schedule_template.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/91356494284.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/poroxuguzuwuziwobex.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_off0000d5ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5ED 5028 bytes
SHA-256: 89511f958b25307a0f9c4eea80b1e75d223e8a36402923ea71762d3343a27085
font_01_sfnt_off0000e6be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6BE 11272 bytes
SHA-256: 13d4d274937fe6482f6f8b6858ea9bbacddb5a0eeb120dcdf7603de84613ce37
font_02_sfnt_off00010a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A99 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c