Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4c788ba0bb30bd5…

MALICIOUS

PDF

82.8 KB Created: 2021-03-05 11:42:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1d5b5a9d17a04675025d11efb58d89cc SHA-1: d2da12256024b401cf58764f9a93ba917fcfc809 SHA-256: e4c788ba0bb30bd5d55ae5df54ca8dcdc020fc2d841bb6c26c8e3b6660fd3c7d
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL that directs users to a suspicious domain, likely to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to academic answers.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/award?keyword=physical+and+chemical+changes+lab+report+edgenuity+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4373757/normal_5fccd91dd6fbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470678/normal_602178ca6c59d.pdfIn PDF document text
    • http://tufipenuvabiwed.iblogger.org/26084050163.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372673/normal_600f00bc283b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464995/normal_5fca828c45c49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447251/normal_600b2a8b78bcd.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://uploads.strikinglycdn.com/files/7276be4f-f39f-494c-be8d-0ab98dcd2750/what_is_the_best_aperture_for_night_photography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/673bd620-ddcd-4447-b001-4bb2f7576640/lekitofexabufosavaji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1e34660-77b5-475d-99e7-3d913e26bc95/67911221206.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdf002f4-a357-47a0-b1df-2edc4e3dc308/zekuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf03710e-1ede-4c31-9e3f-f437384952db/pedidowe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07b214ed-62c9-43d9-8fc7-49a3045ce39b/bic_america_formula_f12_subwoofer_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46cfc35e-dba0-4ee6-958d-8a93f3900040/20953784792.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db7eb2a9-da15-404a-9446-c81b4b18cb35/what_reading_level_is_biscuit.pdfIn PDF document text
    • http://vimobuzu.epizy.com/allow_us_to_introduce_ourselves_meme_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7af20879-37bc-4f85-84ae-0d5f1d418747/ninja_blender_replacement_parts_bl642.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c8cd1bf-22ed-40c6-b038-be2f03c9b8e1/36157157529.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10d67f07-d53a-4f4c-86b1-2f3e8e7e8554/fisher_price_pink_petals_jumperoo_target.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5262c25-0a91-4f2b-b141-179eb5ec5bd3/66022301893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da965663-98b9-4b59-bb73-a4a40cf1e762/65099766848.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80fa5b4d-f1d9-422f-8933-99a244c5cad5/2007_cub_cadet_lt1050_starter_solenoid.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_off0000f8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A1 5704 bytes
SHA-256: f7025d44a10d649e0d47d0f0d2a5e228c7c56e1076f8fec61f22bc6f4cefbca4
font_01_sfnt_off00010bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BCC 10424 bytes
SHA-256: 05ac6d3961697d0fa6472f65590a32eb873d20db5d2703b4dd7f1c538be5e531
font_02_sfnt_off00012f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F5D 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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