Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2a5362b771b85ca…

MALICIOUS

PDF

83.7 KB Created: 2021-04-07 21:00:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 5b50aa3fe7b88d9dfec1818fdce8679e SHA-1: 6871ce40bad1dfd1f1da77a388f96b2e1df0a48c SHA-256: a2a5362b771b85cabe47071da4269f9417f681d56eee6ca40d18471a9946b90b
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 redirect the user to a harmful site, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/strik?utm_term=2003+jeep+liberty+sport+4x4 PDF link annotation
    • http://chatik85939775.fun/96252281832g45i2.pdfIn PDF document text
    • http://opsnatur.fun/lesutenisimopoganejadazu6g5dx.pdfIn PDF document text
    • http://jevufoduxixan.22web.org/how_does_a_multidisciplinary_team_benefits_the_classroom.pdfIn PDF document text
    • http://setlyb.online/redupobizijadinao9p2v.pdfIn PDF document text
    • http://grampus-shop.com/julijawaxeli0ux9.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/gebukil/royal_brompton_hospital_transport_form.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/prudential_plc_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/cobra_360_laser_9_band_codes.pdfIn PDF document text
    • http://tefojapi.rf.gd/exercice_amplificateur_oprationnel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ea6d444-25f9-448a-bda7-47bd624d6b62/how_to_train_your_dragon_2_eret.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/fe_mechanical_practice_exam_effective_with_exams_beginning_july_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/jeu_de_carte_reussite_solitaire_regle.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/fesidumiporo.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/segedebugodiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8c06817-c7e0-4317-a5f5-3d8019238ec1/54628639381.pdfIn PDF document text
    • http://supijidexigoba.epizy.com/49376356625.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/bepajik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cf5afae-b6aa-47a1-afa3-6829bc60b9aa/kayla_itsines_workout_guide_free.pdfIn PDF document text
    • http://milasumumalun.epizy.com/bekaboo_web_series_full_hd_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/44204860333.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D5 5420 bytes
SHA-256: 4698b9dd2ba3c51220dc1bb77df78970d826490affc9b61315227847b340b3bf
font_01_sfnt_off00010868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10868 10596 bytes
SHA-256: 994ea4fcd41b11cc330d2c1b9266442458a4398b81fc3e3aa3fb97b68a3c0c0b
font_02_sfnt_off00012cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CB3 16088 bytes
SHA-256: 019e92530604f520106ad5c4b76966f1dd6ed19205c931d1b65f84b35f1178c0

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