Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf177ecf2bcf587d…

MALICIOUS

PDF

147.1 KB Created: 2021-03-29 05:43:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 672a37d8e30a3f88e874ca515aba4ed4 SHA-1: 94fea2cd8ffbe2d6341d3f80d21a9f64819bb739 SHA-256: bf177ecf2bcf587d943570a985919b36ae639cb930e5c7dcf688c42dd8c7379d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though partially corrupted, suggests a lure related to business administration manuals.

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/award?keyword=manual+de+administracion+de+empresas+pdf+chile PDF link annotation
    • https://xupazipul.weebly.com/uploads/1/3/5/3/135325103/rejawijosudukiru.pdfIn PDF document text
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/10338.pdfIn PDF document text
    • http://policyhelpcenter.com/minecraft_1.8.0.8_silah_modue26ra.pdfIn PDF document text
    • https://kutesavakelex.weebly.com/uploads/1/3/4/3/134336058/1208015.pdfIn PDF document text
    • http://cashtanks.fun/what_number_should_i_set_my_mini_fridge_to82qqp.pdfIn PDF document text
    • https://letolikasepa.weebly.com/uploads/1/3/4/6/134625664/ef10e713b.pdfIn PDF document text
    • https://zokevuwokonumez.weebly.com/uploads/1/3/4/6/134682223/9ce47c7fb.pdfIn PDF document text
    • https://bonitolopulako.weebly.com/uploads/1/3/1/3/131384654/jeriw-zazagalajurum-kizanepo-bokofaxotifiko.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://s3.amazonaws.com/gosete/mejores_cascos_inalambricos_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/5716029176.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/google_chrome_apps_for_pc_free.pdfIn PDF document text
    • https://aca292c6-a3ee-4c96-b4c9-db15c8eca1b9.filesusr.com/ugd/cd1d52_2f6a6e5fbce64b0d894f6fe9fd1afad9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/farokof/97969226168.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/factorio_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/kindergarten_worksheets_math_shapes.pdfIn PDF document text
    • https://37bdae34-bb2f-403f-997c-54a7c09d9c06.filesusr.com/ugd/dc98cc_49a5a7babc5546858370efdf5329a167.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mulerux/gozewililekavikilesep.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/kusiv.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/jelaskan_perbedaan_fob_shipping_point_dengan_fob_destination.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_off0001f339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F339 5280 bytes
SHA-256: 724e72153e508bf6c23e3d931b00c8ee62dbd10d9fafa33b10107925f607e05e
font_01_sfnt_off000204fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x204FA 13072 bytes
SHA-256: b6f597be2e01f41753a3f2d7c45e5abee9ea21323091f33da6b836502adeb84c
font_02_sfnt_off00022e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22E90 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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