Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bad0ef9a5ae067f…

MALICIOUS

PDF

76.2 KB Created: 2021-04-07 08:19:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 556bcd4ccce14164928b7573386fe201 SHA-1: cb47f15d773514377fd03ce160ad9107411b29c8 SHA-256: 8bad0ef9a5ae067fba6944306f2cb92779fef843d9bededd430515aeb6386354
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically indicating phishing and trojan activity. It contains an embedded URI pointing to 'lozipotod.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest the file is designed to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/strik?utm_term=clep+college+algebra+book+pdf PDF link annotation
    • https://joposiga.weebly.com/uploads/1/3/5/3/135399072/7394862.pdfIn PDF document text
    • https://kagivosivozavex.weebly.com/uploads/1/3/4/7/134746508/c473e340282.pdfIn PDF document text
    • http://runojiwum.getenjoyment.net/pocket_anesthesia_download.pdfIn PDF document text
    • http://gepopusoka.mypressonline.com/31910381453.pdfIn PDF document text
    • http://gukabibus.mygamesonline.org/98683830038.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/how_to_set_profit_target_in_forex.pdfIn PDF document text
    • http://foramodosug.mygamesonline.org/building_control_act_1990.pdfIn PDF document text
    • https://betozuwozoz.weebly.com/uploads/1/3/4/1/134108580/555ca3daa3d54.pdfIn PDF document text
    • https://kikosezuzo.weebly.com/uploads/1/3/1/3/131378972/2518356.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/lomiwexuva/zukukivobowobidexog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2544827b-2b0e-4462-bf7a-f2c85eb1dc05/mlk_letter_from_birmingham_jail_shmoop.pdfIn PDF document text
    • http://refowokewip.rf.gd/sudodod.pdfIn PDF document text
    • http://tameladizikep.atwebpages.com/94875255462.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/capitalization_worksheets_grade_6.pdfIn PDF document text
    • http://gelofobomafagez.epizy.com/javikuve.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/xukofa.pdfIn PDF document text
    • http://gurepabe.epizy.com/fibumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/891631db-3f8a-4fcb-bd42-2d348c480ac1/el_conocimiento_silencioso.pdfIn PDF document text
    • http://dubejatusir.epizy.com/chomp_sms_app.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/4666051959.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec30d031-3da1-46f4-9983-44b74f826b10/cub_cadet_528_swe_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/41088654195.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/me_before_you_ting_anh.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_off0000eb30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB30 5252 bytes
SHA-256: cc1695d5b1c706d0e16f43503b3456ef27aa0c1478fc0ab33ce85c4d71ae7e10
font_01_sfnt_off0000fd1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD1C 11272 bytes
SHA-256: dc66e524b943cd5082f00b88b832ac6e051510184ad91e9424db988ebfc5d766