Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4818409f9720e7…

MALICIOUS

PDF

82.7 KB Created: 2021-05-10 06:00:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7f32a2ce87c9febb46a220e323acc0f SHA-1: bd3632c253c93b1cdce6e29ca1ea5f3179591bf3 SHA-256: fe4818409f9720e7eee37f50b43c3d745381a9ac2fff3e0d41b56c020b303dec
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to trick the user into navigating to a malicious external resource.

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://xezojetit.ru/strik?utm_term=how+to+pair+xfinity+remote+to+onn+tv
    • https://cdn-cms.f-static.net/uploads/4467581/normal_6050a6f4cd4ad.pdf
    • http://torgservis-rus.ru/breeam_domestic_refurbishment_2014_manual208s2.pdf
    • http://parrrtner.xyz/496233074247sg93.pdf
    • https://cdn-cms.f-static.net/uploads/4403679/normal_5fd9d4da2d891.pdf
    • http://tokio-2020.fun/wosomop93f81.pdf
    • http://devlp.design/diagramas_uml_ejemplosyd1xk.pdf
    • http://fenellalucynelle.info/572615589998vmkf.pdf
    • http://tb-films.ru/how_to_install_realtek_audio_driver_in_windows_7vj0j0.pdf
    • http://about-fb-support.com/72017548072mpdn4.pdf
    • https://cdn-cms.f-static.net/uploads/4373264/normal_5fdb133f17332.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gupawupigawono/90254945668.pdf
    • https://9d50af6f-dbf7-41ba-b854-83985329a12b.filesusr.com/ugd/33c377_50f1c00b436c4b679df0cf5f00bcfcf2.pdf?index=true
    • https://0621cc9e-6449-4e8a-a8bd-baee9ad62a2c.filesusr.com/ugd/affb4a_b419296797b34ac9ae582eabd14394e2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c491186d-332f-43f5-9971-1fa9d540014d/the_toltec_art_of_life_and_death.pdf
    • https://80172413-d145-4b71-b7cf-4a007d76ad29.filesusr.com/ugd/cacfd7_e28a956524f940f7a0a5cb91dd4ebbcd.pdf?index=true
    • https://s3.amazonaws.com/kudowo/67572589559.pdf
    • https://3c1efe6f-6e34-41bb-a2c4-2be85dd3cb33.filesusr.com/ugd/41f880_5e794105d1134775b41f52d08050e552.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fc7281dc-31cd-4b45-a709-b13810a4ab5c/80697389295.pdf
    • https://s3.amazonaws.com/sogovekevi/dukidojatajabib.pdf
    • https://uploads.strikinglycdn.com/files/c6d3d066-9d97-4882-8d23-826570b56836/5413623216.pdf
    • https://uploads.strikinglycdn.com/files/d37a21f0-0cde-44ba-8a69-dcbfb70a5984/89653156613.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104df.bin
990abbeb18525ba210584c021f5694280943c2375cec4aa45882d265c1e56a91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104DF 5120 bytes
font_01_sfnt_off00011656.bin
b17e2e2c2ba3210675295a2fb6774de5f1d944079b4d0f594f61bd2cc1f56b41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11656 11080 bytes

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