Malicious PDF — malware analysis report

Static analysis result for SHA-256 afbfdc74f0e022da…

MALICIOUS

PDF

70.3 KB Created: 2021-03-19 23:46:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a53f432f1bb9c90a23f0fc82eea7420 SHA-1: d9fda80979899b5e8cde803ab2d4c5e4f224f6e3 SHA-256: afbfdc74f0e022da0c5474fd885ce583e7def30b1cf795fbeece92f0dd978a04
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://zajinet.ru/strik?utm_term=warriors+don%2527t+cry+audiobook+chapter+14', which is likely a phishing or malware distribution lure. The document body, though heavily obfuscated, contains metadata related to wkhtmltopdf and a date, suggesting it might be a generated document used to mask malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://zajinet.ru/strik?utm_term=warriors+don%2527t+cry+audiobook+chapter+14
    • http://4338bacchus.com/bookkeeping_template_for_restaurantrufk1.pdf
    • http://esplus.pro/admissionado_50_essays_that_workedszv51.pdf
    • http://xojetupamowub.iblogger.org/lokumuliroto.pdf
    • http://ejqy.com/how_rich_are_the_top_1_percent_ukau5gj.pdf
    • http://nout-sale.site/cells_alive_animal_cell_answers28nvy.pdf
    • http://jejufanafozotet.22web.org/calaveras_para_dia_de_muertos_manualidades.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://5634f520-c25d-421d-ab67-3d94505d13cb.filesusr.com/ugd/1b85ab_1922865bcf4d45a4a320b2d2f5309e76.pdf?index=true
    • https://e20d271a-53e3-41f9-9180-d6cd5f9fd148.filesusr.com/ugd/6cfc61_0b7254747c464e2d861889d12cd40c9b.pdf?index=true
    • https://s3.amazonaws.com/jijumupade/lockheed_martin_gps_iii_fact_sheet.pdf
    • https://s3.amazonaws.com/xedewofuretujo/wunefozomolulikeva.pdf
    • http://vawupebudifi.rf.gd/85114727086.pdf
    • https://s3.amazonaws.com/wudibirewuduto/akai_professional_apc40_mkii_manual.pdf
    • http://fotenataxiw.rf.gd/toro_power_max_826_oe_review.pdf
    • http://rajiwewovipu.epizy.com/causative_exercises_2o_bachillerato.pdf
    • http://kosirokuki.epizy.com/finding_the_perimeter_of_a_semicircle_worksheet.pdf
    • https://s3.amazonaws.com/girilifawuxi/zebed.pdf
    • http://palipesokugukux.epizy.com/milituruxefuxamogig.pdf
    • https://318abaa7-a496-4882-a5ef-186b1d719b20.filesusr.com/ugd/ff2e65_65fc7e2c55874fea868a9b85084100f8.pdf?index=true
    • http://walevuzu.epizy.com/the_study_of_human_geography_quizlet.pdf
    • https://d8d078ea-10ec-4787-8e21-ef6e32b87a24.filesusr.com/ugd/8f6098_b34637126ab846d99e9fd7951b96380b.pdf?index=true
    • https://s3.amazonaws.com/lorifumofelu/80905500980.pdf
    • http://tokavasetalan.epizy.com/alternative_to_android_or_ios.pdf
    • http://fowafad.epizy.com/sensory_system_of_insects.pdf
    • http://futoxivugumerav.epizy.com/neet_2020_form_pg.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_off0000d75e.bin
65983308c0933c420736548e9e8918eee7b4b5e02092202f9f67a26010f34b3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD75E 5620 bytes
font_01_sfnt_off0000ea98.bin
1f6d2bf4deb1f4228e841cf1893505f56d054ded31062b6ebb5603625fe3cad2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA98 9632 bytes

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