Malicious PDF — malware analysis report

Static analysis result for SHA-256 47aa62b7e0abc03a…

MALICIOUS

PDF

75.7 KB Created: 2021-05-20 03:45:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 49877323cd04455bf13765e7d8008015 SHA-1: 73d86ada381f66cb623e776a07a238af1250791c SHA-256: 47aa62b7e0abc03aeb96c35f3d11ff90cdc760358b10146666ef98cb7ea52ca1
176 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a ClickFix paste-and-run lure and a clipboard-command (paste-and-run) lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://gimoguvi.ru/strik?utm_term=mengatasi+microsoft+office+professional+plus+2016+encountered+an+error+during+setup PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389604/normal_6026a47e51176.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468289/normal_604cdf4039d3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481695/normal_6037ae20cb26c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379614/normal_5febce8854598.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370987/normal_600e9b238c9be.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/f92c7927-1cec-4483-a865-22c7dab60734/is_dork_diaries_a_novel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a103eeb-514e-4bcf-8245-ceff673af827/savupuninasufejubudakotu.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/jumusutelixelojedebari.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1e68690-2922-494d-aac2-b155ffc8d1ca/kavuzaruwol.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/ireland_v_wales_rugby_match_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4f3a144-6f1c-4920-8d1e-bc76a9e01753/28623724278.pdfIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/geometria_analitica_area_triangulo.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/zopiraru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/959c4cb7-56af-48fd-a8e5-72cfbd12f6db/70143568009.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/1206653161.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a12437d7-5ef1-44c0-9dee-830fe3426392/46772033493.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/google_sheets_api_get_last_row_python.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f22d2d1-6517-45ee-94fa-5fa251113f82/vawemadirefunin.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/swing_components_in_java.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_off0000e860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE860 5960 bytes
SHA-256: baece567985e26c8d2a7ba32bfbcb9e653617376db80aa39cbd39eb08e44c603
font_01_sfnt_off0000fca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA6 10560 bytes
SHA-256: 003a213da12aca30cccded51ccff967476701b839fdaa0ac69f3d523d6ec75b8

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