Malicious PDF — malware analysis report

Static analysis result for SHA-256 2afa21917a5fd0fd…

MALICIOUS

PDF

75.7 KB Created: 2021-03-03 17:41:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: fd2626f7c6415a29a0cb102f280e0218 SHA-1: 2712e8f12c699e007e41b7580106300fc37d2e0c SHA-256: 2afa21917a5fd0fdd6271a2ed7a80962214505c6f3d4c4bab0c17eec525a3bf5
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, many of which point to disposable domains and are flagged as part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a common phishing lure, likely attempting to redirect the user to a site for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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/123?utm_term=scansnap+s1300+troubleshooting PDF link annotation
    • http://mamefumiwuto.mywebcommunity.org/vonimutelil.pdfIn PDF document text
    • https://xonaxogurevof.weebly.com/uploads/1/3/1/4/131453171/redixu.pdfIn PDF document text
    • http://jedilinosur.mywebcommunity.org/79626517540.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/IjahfIw/nuruniwuwiwedagevuli.pdfIn PDF document text
    • http://gadetebes.sportsontheweb.net/wugefodixipemojixulos.pdfIn PDF document text
    • http://pikegupima.medianewsonline.com/26514060625.pdfIn PDF document text
    • http://nejupike.mygamesonline.org/sulosegowoxudazowitu.pdfIn PDF document text
    • http://zugapuvu.mywebcommunity.org/ap_lang_essay_grading_scale.pdfIn PDF document text
    • https://xovoxabazilepot.weebly.com/uploads/1/3/6/0/136054719/senawixuxulisad.pdfIn PDF document text
    • http://gokutasajegeraj.22web.org/jegikoba.pdfIn PDF document text
    • http://larebalin.mypressonline.com/ikea_malm_full_bed_slats.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/tes_resources_balancing_equations_worksheet.pdfIn PDF document text
    • http://rixibedi.onlinewebshop.net/649593450.pdfIn PDF document text
    • http://nitubak.atwebpages.com/winakuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/dad_calling_alert_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/wedding_ceremony_checklist_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2B 5676 bytes
SHA-256: 627487e7eda6ed455884bed57577ef2c81f9ab333bcc372446e7fe50e4b1512e
font_01_sfnt_off0000ee5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5C 10936 bytes
SHA-256: aed7236ecedd4a4bd06e7a1705419b25c774cc6a1c5aae5715fb3a48cb4a8d2e
font_02_sfnt_off000113dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113DC 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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