Malicious PDF — malware analysis report

Static analysis result for SHA-256 8080bfd4689a8556…

MALICIOUS

PDF

74.5 KB Created: 2021-04-04 21:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: b7c8ca0f659a9a924e0d9bc7a845f44e SHA-1: ddcea81a045e1f11b56dc167f4305520f5a229c8 SHA-256: 8080bfd4689a855640375a5b2d27ccc34d28a2915e27c5517293594c7df4e67f
126 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, with one specifically pointing to 'ponafet.ru/strik' and including a 'utm_term' parameter suggesting a phishing lure related to 'Vizio tv model e601ia3e'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links on disposable hosting, further supporting a malicious intent. ClamAV detection as 'Pdf.Phishing.Trojan' confirms the malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://ponafet.ru/strik?utm_term=vizio+tv+model+e601ia3e PDF link annotation
    • https://cdn.sqhk.co/susotizakaxe/h9oijuA/fab_corporate_mobile_banking_online.pdfIn PDF document text
    • http://coolstudent.space/how_to_count_by_9_to_90p82id.pdfIn PDF document text
    • https://cdn.sqhk.co/rosojolude/fgf9Gio/41609070450.pdfIn PDF document text
    • http://ilkertr.shop/blood_cancer_report_2019zmrrl.pdfIn PDF document text
    • http://bluebadge-support.com/74220557703eqyj7.pdfIn PDF document text
    • http://yazansoft.com/rizomi_achimenes_de_vanzarebhzok.pdfIn PDF document text
    • https://cdn.sqhk.co/lanamixese/ggiaOup/19773392000.pdfIn PDF document text
    • http://kazimibi.getenjoyment.net/angular_tutorial_point.pdfIn PDF document text
    • http://mowukedova.mypressonline.com/kogipurawusuzoxowutilunum.pdfIn PDF document text
    • https://cdn.sqhk.co/ramejolir/JvXhczw/sebebafonukemetedef.pdfIn PDF document text
    • http://mignonette.space/distosia_jalan_lahir06ki3.pdfIn PDF document text
    • http://mikovil.mywebcommunity.org/5656575826.pdfIn PDF document text
    • http://everydays.space/best_class_to_play_solo_in_diablo_3l1k8t.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wazipegemezen.atwebpages.com/el_conde_lucanor_castellano_antiguo.pdfIn PDF document text
    • http://tudixuzaw.onlinewebshop.net/34957086596.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/328cd8d7-53ac-4e98-af7b-92d959efc296/volagiju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70337d35-7dff-4ee5-ac10-809c27a9881d/47324992003.pdfIn PDF document text
    • http://jimarol.myartsonline.com/28601582657.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e54ddf1-cdda-4534-9525-adb2218c5c04/felusipulonivisorofuvukok.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_off0000e2d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D6 5284 bytes
SHA-256: 60bb330bc8e8d7c5d5b5610f379909f1e513d49af7ba15eb4a32ca450e0c82b0
font_01_sfnt_off0000f4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D8 11548 bytes
SHA-256: 61c094cede5bcf46fb607edb263834330c7a4b5b37754ea80b1b69840028663a

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