Malicious PDF — malware analysis report

Static analysis result for SHA-256 150ad42fcdc1cd7f…

MALICIOUS

PDF

55.6 KB Created: 2020-11-06 20:20:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: dcaa5e36bedaee922e887bd6e2a46020 SHA-1: 7297fbc39f9eceb31754759af78ab2aae719e812 SHA-256: 150ad42fcdc1cd7ff6d70f2fb06a4b6dbab1a9bd06448530ce1a9baaa179c1fb
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1203 Exploitation for Client Execution

This PDF document is identified as malicious due to its redirection to a known malicious URL and its function as a link farm. The document body contains text and a URL related to 'Clash of Clans private server for windows', suggesting a lure for potentially unwanted or malicious software downloads. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document likely instructs the user to copy and paste content into a shell, which could be used to execute downloaded payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffine.ru/aws?keyword=clash+of+clans+private+server+for+windows In PDF document text
    • https://sojutobifedurex.weebly.com/uploads/1/3/4/5/134588439/447662.pdfIn PDF document text
    • https://wekowemawifov.weebly.com/uploads/1/3/4/2/134266616/8298704.pdfIn PDF document text
    • https://kumupesefutevun.weebly.com/uploads/1/3/4/4/134463509/taluwodebo_lubigudijita.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/0bc6dc12-a307-4957-b649-c45e6a520797/65905716339.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf2bc8f4-76db-40af-b126-e4b3fd87a8e7/saave_wizard_cracked_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/229f85ef-05c1-4d61-a41f-667ce6fcce10/informacion_textual_proposiciones_erroneas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22d3c300-365a-40a2-bb1f-871d3dfc5943/nikuposibatumupemibamepu.pdfIn PDF document text
    • https://tafexoru.files.wordpress.com/2020/11/3294531957.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/348b3ccb-4340-4bd0-95fa-b716b55c508c/dorazugitezuwezesunebit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/921be046-7e9e-417b-9d11-3295e119fdfe/76008423687.pdfIn PDF document text
    • https://vabavoresadi.files.wordpress.com/2020/11/debewasomogoro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7512c018-f3f0-42ef-8ad5-474a9fabf71a/49230884170.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f7d4196-1d2b-4582-b168-1782c8990982/old_rolfe_cemetery_iowa_zip_code.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_off00009921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9921 5300 bytes
SHA-256: a5d302f6e92cfac5c8481d05da66bea47c3b74dcd459ae1b4565e1a8ab40e713
font_01_sfnt_off0000ab36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB36 11120 bytes
SHA-256: c4fd7daccc8fd47bca72810a2d68a7568ec86f07bbb1d874a79ed7b1354b93d4

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