Malicious PDF — malware analysis report

Static analysis result for SHA-256 41ce49570d191d52…

MALICIOUS

PDF

71.4 KB Created: 2021-03-29 18:11:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 7ec2f122bebb1fb0ad6b6cb13edfff46 SHA-1: e84f2ad06c3cfcc201dea7166391c557f276d53b SHA-256: 41ce49570d191d52f4f92fb18fa7a9c84d80e396c76cd0236fc4e13c49bae592
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. ClamAV detection and ML classification further support its malicious nature. The document body, though heavily obfuscated, suggests a lure related to academic content to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/award?keyword=zeidler+nonlinear+functional+analysis+pdf PDF link annotation
    • http://reabook.online/737004271150lz95.pdfIn PDF document text
    • http://sebevifa.getenjoyment.net/31201204588.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407085/normal_604329e8c27ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376380/normal_6053bc281cc17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468572/normal_600e659959b14.pdfIn PDF document text
    • http://devgame.design/10307008951yzscb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392462/normal_601fd8d89cab8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424331/normal_603084fcc0f73.pdfIn PDF document text
    • http://gomesuzos.mypressonline.com/cakewalk_sonar_platinum_tutorial.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454438/normal_601405bfd0952.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449177/normal_6018d85e164ed.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/1b25ed23-7fcf-472a-8318-8ef455790b16/zegasiwerasevuxupeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b043c47d-797c-4c69-831a-fee628e1c64c/how_to_apply_for_medicaid_for_elderly_in_texas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dc154e4-2184-45e9-b81d-db37b5adc316/delorme_inreach_explorer_two_way_satellite_communicator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/713fcd3d-b6b9-4024-b58f-984850534deb/44675800626.pdfIn PDF document text
    • http://tokozod.myartsonline.com/penatalaksanaan_cephalgia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7fdaef3-a1b4-45d5-b58b-92de9790c55c/26649810644.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_off0000daa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA5 5208 bytes
SHA-256: 84f35663d82513a9a251b79f2ea3839cdf723e0120059a5cbaaa4799045f1d9a
font_01_sfnt_off0000ec7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7E 10504 bytes
SHA-256: ac69058a02a2aba47f47213acdb6e21cf135526dc43fc6b307fc7eda7e290248

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