Malicious PDF — malware analysis report

Static analysis result for SHA-256 e04e9f6fbd9a248c…

MALICIOUS

PDF

84.8 KB Created: 2021-02-13 06:21:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0d0c7ff9bb9fab3eb5fdbba969c5c540 SHA-1: 2cb8085f28cf0486ac90850e7f205fa644c4148e SHA-256: e04e9f6fbd9a248cfbf55cda9e5acea21032a1025af321a998319a262901ec29
264 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains multiple embedded URLs and heuristics indicating malicious intent. It specifically instructs the user to disable security software and copy/paste content into a command-line interface, likely to execute a secondary payload. The presence of a known malicious redirector URL further supports its classification as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/wix?keyword=windows+8+activator+kmspico In PDF document text
    • https://cdn.sqhk.co/jolodovi/Phddgf7/45457343947.pdfIn PDF document text
    • http://busurman.space/army_promotion_board_bio_templatekfrr5.pdfIn PDF document text
    • http://vwwv-avito.online/479209362530ovj0.pdfIn PDF document text
    • https://ribugasa.weebly.com/uploads/1/3/6/0/136053023/4771858.pdfIn PDF document text
    • http://klyshsheff.xyz/detailed_project_report_for_townshipu5w1l.pdfIn PDF document text
    • https://negofajosodin.weebly.com/uploads/1/3/5/3/135314147/1914130.pdfIn PDF document text
    • http://hyipinvest.site/spider_man_homecoming_pirate_bay0cnd3.pdfIn PDF document text
    • http://realnoe-obshenie.online/minecraft_castle_buildinguti40.pdfIn PDF document text
    • http://fodamibokaf.66ghz.com/mavamodanajitisasuwivepe.pdfIn PDF document text
    • http://dalnoboyi.xyz/queen_greatest_hits_vinyl_songsw9uzk.pdfIn PDF document text
    • https://cdn.sqhk.co/jukunobegabe/bnYjhcI/54595524977.pdfIn PDF document text
    • https://kadonomu.weebly.com/uploads/1/3/1/4/131454950/posuj-gokibozalu-repufadipufigi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zebafuvevejol.epizy.com/bowisipakojori.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/schedule_b_2018_form_941.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_off0000fd4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4B 5608 bytes
SHA-256: 415e23c15959e7a12b62f21e2b7f7284dc6ffb56317e08ac60c3661effc85f26
font_01_sfnt_off00011070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11070 19808 bytes
SHA-256: 43958dbade2674b7153059024e84c10bfa0fe3531fc3c7c5413d4c047929c7e7

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