Malicious PDF — malware analysis report

Static analysis result for SHA-256 752b8a9175e05aea…

MALICIOUS

PDF

76.2 KB Created: 2021-05-21 02:51:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: f45e4afd208615d9a685134e957a5033 SHA-1: bae06d91e1e7ab17f171a1e9f0ecc1b75c7d319b SHA-256: 752b8a9175e05aea6356fc47709f315628508054cde924808e9f8e59ddc7c26d
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one specifically pointing to a URL that appears to be part of a phishing campaign related to email setup. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may be instructing users to decrypt a payload, a common tactic for bypassing security gateways. The presence of many external links, including a 'link farm', indicates a potential attempt to distribute malware or lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://jumiwimov.ru/strik?utm_term=how+to+setup+bellsouth.net+email+on+iphone PDF link annotation
    • https://tozabofosizo.weebly.com/uploads/1/3/5/3/135340530/luximam-zirikuzopuboja.pdfIn PDF document text
    • https://zoseduzarososu.weebly.com/uploads/1/3/2/7/132740870/92cabb4.pdfIn PDF document text
    • https://mozesewopizudal.weebly.com/uploads/1/3/4/3/134363743/nofagipibegu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383918/normal_600cfd3bb2628.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389603/normal_601a1fd85c6e9.pdfIn PDF document text
    • https://kagivosivozavex.weebly.com/uploads/1/3/4/7/134746508/2258024.pdfIn PDF document text
    • https://bikujezojodu.weebly.com/uploads/1/3/4/5/134587809/zemilunakojex.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/betefowubevat/investigative_reporting_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/how_to_reset_abs_light_on_2008_ford_escape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45e7e831-f6b9-4715-bf4b-b8c952b19c5d/william_blake_songs_of_innocence_and_experience_comparison.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/descargar_netflix_para_android_8._1._0.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/how_to_make_a_table_pretty.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/nemowixuzuga.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/nremt_recertification_exam_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f127cb57-08b3-4f6e-83ed-c2232c09e421/86972201499.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/best_mini_dv_tapes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3915babc-5982-4708-a31b-0becd3f21eac/que_diferencia_existe_entre_destilacion_sencilla_y_fraccionada.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/bipedenafubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d4d2dd2-2ebb-4860-b136-31d0cf288194/48208629196.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/free_email_templates_for_real_estate_agents.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/velodelelufefof.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_off0000ec07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC07 5188 bytes
SHA-256: 26b9cfa5d07fe0bd1eaa436f2fbb7f0a662c64bf7884abc53619939b8a24f80f
font_01_sfnt_off0000fd8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8E 11112 bytes
SHA-256: ed66db1a0559b6a46770cebdf198f585c8f8cf1bd2bd0bb110f0902477d4c093

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