Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a2f3140686e917…

MALICIOUS

PDF

77.6 KB Created: 2021-03-04 14:22:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 2a364c24c3fa46fca62fdd29aa9e7afd SHA-1: 6db8f2da2d1cdae4482064418e6fbbfa2edb064b SHA-256: c6a2f3140686e917dc44fe5b4d5fe215fd464f3e2ee9f45fb8cbb771d20c7837
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick users into visiting a malicious site, consistent with spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/strik?utm_term=advanced+excel+reporting+for+management+accountants PDF link annotation
    • https://cdn.sqhk.co/mojafefegamo/f2gdhbA/gafuwovawulubikerepuwesup.pdfIn PDF document text
    • http://kaforij.22web.org/pomilon.pdfIn PDF document text
    • http://wavujilipazi.22web.org/bombsquad_mod_apk_all_unlocked.pdfIn PDF document text
    • https://cdn.sqhk.co/xataruzepape/ghjii2t/98498402488.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/khiLgst/penafuvomodobug.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzomorikat/VFLrIZy/sitozogaxodojuri.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/4eb86756-7a73-4e0d-bd95-65a77a873342/why_is_volcanic_soil_good_for_growing_coffee.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f6491c8-ab2a-4a56-86f1-a031d2b343bb/olevia_universal_remote_codes.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/69006998160.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/anaphylactic_pediatric_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/33361310686.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/115bc6d7-b567-4883-b3de-61077b50df8d/zupirupa.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/waporamuwufapofozusixubo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a064d05-2503-40fe-9830-cfd255949abc/13983150666.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/yakuza_5_trophy_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35f019d5-a298-4f56-9751-30b014f210b8/basinomemetozexukamutene.pdfIn PDF document text
    • http://mukokulag.epizy.com/brussels_tourist_information.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/android_studio_gradle_build_too_slow.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/34484597324.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/avatar_games_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/escape_room_mystery_word_level_38_answer.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_off0000f1ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AC 5592 bytes
SHA-256: 2d881e5b9d94dd68bbdc2c5e6a1261519a09370777ca1f4801b76e0962296fb1
font_01_sfnt_off000104ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104AD 10616 bytes
SHA-256: ae29e0b405940880dc7907e504be4f789ef957a9e18f8eee51774c3697bc319f

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