Malicious PDF — malware analysis report

Static analysis result for SHA-256 eef8c76570440346…

MALICIOUS

PDF

75.3 KB Created: 2021-02-28 02:02:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: d94b74a6df82b7e471a2e4a7358685fa SHA-1: fde1195f975893cb9943e965423e3bf5b6c0b15a SHA-256: eef8c76570440346dd61f5f2a1f4c1df86ddac339cd4dfbd476db302ae3e0d9c
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains an embedded URL that directs users to a site offering a 'windows server 2012 r2 free download'. The heuristic 'SE_SECURITY_BYPASS' indicates the document likely instructs the user to disable antivirus software, a common tactic in phishing and malware distribution. ClamAV detection further confirms its malicious nature, classifying it as a 'Pdf.Phishing.Trojan'. The presence of external URIs and the overall context suggest an attempt to trick the user into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://resalured.ru/award?keyword=windows+server+2012+r2+free+download+64+bit PDF link annotation
    • http://5gusevshop.space/labipejadf2ms.pdfIn PDF document text
    • http://small-italy.space/seventh_day_adventist_sermons_outlines756tn.pdfIn PDF document text
    • http://jilet1.club/persepolis_book_overviewoij8r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370525/normal_601a30ac2d67a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407086/normal_600d25d99b845.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421764/normal_6009be8c9f287.pdfIn PDF document text
    • http://uspex22.online/nugukakewaredijomujovufuhtc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410989/normal_5ff89cef7e201.pdfIn PDF document text
    • http://uscreditreport.info/20418031991q4ne.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/rudelazifizuvo/decretum_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/how_to_do_enlargement_scale_factor_2.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/blockchain_real_estate_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/gavapulivavafozavodezopi.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/dynamic_array_c.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/vukanebakas.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/zebra_barcode_printer_gc420t_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/49300590920.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/balancing_chemical_reactions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/98295235087.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/92097581504.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_off0000e920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE920 5776 bytes
SHA-256: ac671fcb33a7eb6d575c93dc98b22b508cfbb7b5cc4e5ac4229b7f9add8462d9
font_01_sfnt_off0000fcf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF9 10184 bytes
SHA-256: 15836a1597d14037070d1019926dbf00cce79708e49c7746569a7a29c7a366a9

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