Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0b466d53d8bdbcb…

MALICIOUS

PDF

76.1 KB Created: 2021-03-12 18:59:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81f794b22a8ea0c0c14e6c88412b0467 SHA-1: bf44b4183e8bafc89c74968c959f7a740d17c47d SHA-256: b0b466d53d8bdbcbeb375dd912a7da3ceb2ed373ccbe7aaa7c07153dc3561d6b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to 'jottigo.ru', which is likely the primary malicious destination. The document body, though heavily obfuscated, appears to contain text related to a product, suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jottigo.ru/aws?utm_term=mr+coffee+programmable+coffee+maker+5+cup
    • http://vovavipegum.getenjoyment.net/beats_studio_review_2019.pdf
    • http://farozemirig.scienceontheweb.net/27686292389.pdf
    • https://cdn.sqhk.co/rizanatu/jighUhe/general_motors_cars_2021.pdf
    • https://cdn.sqhk.co/dugubupa/dhhOyiT/dabikudax.pdf
    • http://rakadan.sportsontheweb.net/daily_words_app.pdf
    • http://topagut.iblogger.org/the_rock_cycle_worksheet_answers_key.pdf
    • https://cdn.sqhk.co/sejujona/fgg3hag/wagobufovakosiwolek.pdf
    • https://cdn.sqhk.co/sevigexew/GSgdNLv/4511383457.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://juvugevumeki.epizy.com/how_to_open_gate_without_key.pdf
    • https://s3.amazonaws.com/tufitijinexu/93850551241.pdf
    • https://s3.amazonaws.com/batoragubukepo/7th_grade_math_worksheets_algebraic_expressions.pdf
    • https://s3.amazonaws.com/pogolo/anacalypsis_volume_2.pdf
    • https://s3.amazonaws.com/lunojol/36519194215.pdf
    • https://s3.amazonaws.com/tikoweravisixu/taburidakogorosirid.pdf
    • https://s3.amazonaws.com/kavalukato/what_kind_of_oil_does_a_dodge_grand_caravan_use.pdf
    • http://rozosijamuruxo.rf.gd/camping_checklist_excel_template.pdf
    • https://s3.amazonaws.com/gavapozalilup/93618396790.pdf
    • https://s3.amazonaws.com/jupevuxirapi/23648466362.pdf
    • https://uploads.strikinglycdn.com/files/16d3ca1e-907d-47b3-a43d-d43a875dbc90/note_taking_worksheet_chemical_bonds_chapter_19.pdf
    • http://fixobijuruloluk.rf.gd/vesimezapiten.pdf
    • https://uploads.strikinglycdn.com/files/f2b2d8cd-6325-4020-93f8-f141c7f4e22d/94934637006.pdf
    • https://s3.amazonaws.com/jepavilutabilel/jomawet.pdf
    • https://s3.amazonaws.com/zesixefe/pathogenesis_of_essential_hypertension.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb53.bin
81d835c12ba16bf2bf68aa0e924410c43fffc4597776ebfac0b390a26c8b3f32
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB53 5488 bytes
font_01_sfnt_off0000fe02.bin
c26055cf0306dbf6e0e8067da7f1e6642e044de71499983219268a52613b3e3f
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE02 10784 bytes