Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e252be61bf8033…

MALICIOUS

PDF

75.5 KB Created: 2021-06-14 00:19:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 9671efc65634658dc68c095a48c3bab1 SHA-1: aa03a10eaf35064cad1c97ff773d198b888255a2 SHA-256: f0e252be61bf8033b2daf73808b7faf485ae559dae12f819539509effbfe22c9
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous external links, with at least one pointing to a potentially malicious domain (garglob.ru). The document's structure and the presence of many external links suggest it is designed to redirect users to other sites, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://garglob.ru/pbw?utm_term=simple+sentences+of+present+continuous+tense PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495846/normal_600a6cdebdfb7.pdfIn PDF document text
    • https://jupoxoguji.weebly.com/uploads/1/3/4/0/134097256/3634196.pdfIn PDF document text
    • https://moxetutatag.weebly.com/uploads/1/3/4/2/134234950/3241116.pdfIn PDF document text
    • https://finowizefi.weebly.com/uploads/1/3/1/3/131383614/jafolemanawele.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378164/normal_60bc8e478ea5d.pdfIn PDF document text
    • https://komovifewujip.weebly.com/uploads/1/3/4/8/134895136/52b207c1c.pdfIn PDF document text
    • https://zisibunekotif.weebly.com/uploads/1/3/4/9/134902626/2c031.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469828/normal_5fd91a841eae6.pdfIn PDF document text
    • https://polaposegit.weebly.com/uploads/1/3/4/5/134591324/kukobaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446762/normal_603d28b14b049.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/eac3c66c-4f7b-41b9-af08-7aa467e4ebd3/ganongs_physiology_examination_and_board_review_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c9a023b-e4cc-48e1-bdba-eefc74085139/23603486489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cdf2648-bdc2-4b60-a0d4-317f79220f34/john_deere_l130_belt_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05be2ba6-cbbb-4593-b6d3-b1c679154e16/55916618898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce1bb1f7-2726-450b-852d-657c5873bd62/bixapaxuvadazidomegusovo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e32ec32a-5a89-4e1a-bb18-1f48fd9904c1/what_is_normal_distribution_in_statistics.pdfIn PDF document text
    • http://zegugas.pbworks.com/f/tupapuf.pdfIn PDF document text
    • http://betosaxugawi.pbworks.com/f/beginner_half_marathon_training_plan_12_weeks.pdfIn PDF document text
    • http://rezedul.pbworks.com/w/file/fetch/145027791/gta_5_download_mod_apk_android.pdfIn PDF document text
    • http://povivokovawi.pbworks.com/f/xujodekepiguzu.pdfIn PDF document text
    • http://duziruromeja.pbworks.com/f/natipanujag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fcf9361-81db-42c2-a1e3-06dc2d751951/resumen_capitulo_4_de_la_fuerza_de_sheccid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/251c0963-43e2-43b6-ba2d-441339a7ab25/xaponudizaroberefijakabol.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_off0000ea50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA50 5052 bytes
SHA-256: 1199fb34ff7a7ad8afcdb1712030d72480b703aee50f99078543ab87f7e709e8
font_01_sfnt_off0000fb70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB70 10772 bytes
SHA-256: 6f43d0d74a9774c0e214f1c796b5ff46ad69a84f4687053c2956c04e0146777d