Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bffa6064b1dd4b6…

MALICIOUS

PDF

78.9 KB Created: 2021-03-01 02:01:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 25e42c2e606fe5873fce16fa141b788e SHA-1: 4f7d24a9a0ab9eb61bba5d4fad07325a60fecaf0 SHA-256: 0bffa6064b1dd4b6b053b885192b350ef3a07a964197ac106d95fb0b248bf401
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

This PDF document exhibits characteristics of a phishing or scam campaign, indicated by the presence of numerous external links, many hosted on disposable domains. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, contains elements that suggest a lure, potentially related to legal matters or downloads, and the 'SE_CALLBACK_LURE' heuristic points to a potential phone-based scam. The numerous external links, including 'https://resalured.ru/award?keyword=how+to+be+legally+married+in+nigeria' and 'http://lidzadva.xyz/69781113408zy72v.pdf', are likely used to redirect victims to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://resalured.ru/award?keyword=how+to+be+legally+married+in+nigeria PDF link annotation
    • http://lidzadva.xyz/69781113408zy72v.pdfIn PDF document text
    • http://autokenn.com/icici_home_loan_amortization_schedule33ws5.pdfIn PDF document text
    • https://cdn.sqhk.co/zowolanazew/1Ajbdje/study_skills_for_high_school_students_activities_ppt.pdfIn PDF document text
    • https://cdn.sqhk.co/sunomedude/bEAuZWV/barber_shop_nyc_upper_east_side.pdfIn PDF document text
    • https://luletifolavok.weebly.com/uploads/1/3/4/3/134369244/jukat_tizogagarad_jomuvonezen_fimalikavisijar.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/harry_potter_freeform_extendedeb3hf.pdfIn PDF document text
    • https://cdn.sqhk.co/fosojatesog/cgiiiYB/how_to_help_friend_find_my_iphone.pdfIn PDF document text
    • http://how2clever.com/galvanized_iron_sheet_unit_weightual1c.pdfIn PDF document text
    • https://cdn.sqhk.co/waximanodif/geijghV/javijulusesowavofisulowel.pdfIn PDF document text
    • http://blu-ital.space/66564217964t030l.pdfIn PDF document text
    • http://ukranews.icu/vampire_null_5e_statsinwd3.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/egiyYgc/1332062652.pdfIn PDF document text
    • http://svarka-aurora.online/bogue_inlet_offshore_fishing_report85ay6.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/xirixepo/chhaila_bihari_ke_video_gana.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/android_api_levels_usage.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_off0000f7a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A3 5260 bytes
SHA-256: eac2516214fea3ee11660bf272c40d7b82cc175c7f6777254d2e112b6c1b120c
font_01_sfnt_off00010988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10988 10732 bytes
SHA-256: f700ad8c6a8a889a86a39ae6bbe9c3afa7d3bbe1883fc8ee18505d70277060f7