Malicious PDF — malware analysis report

Static analysis result for SHA-256 9499d2ce3e006167…

MALICIOUS

PDF

65.6 KB Created: 2020-11-26 05:04:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b9bcc36f10894501350186c5e7591be3 SHA-1: 56c64f95e20ef5da8dc50d30f5f3072d4aa1d87a SHA-256: 9499d2ce3e006167f486e3263dcc0f0fd30ccc6da78bfcc45cca1817cb5e714a
196 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains a heuristic indicating a 'Clipboard command execution lure', suggesting the document instructs the user to copy and paste content into a shell, a common technique for executing malicious commands. The presence of external URIs, including one pointing to a potential link farm, further supports a malicious intent, likely to download a secondary payload.

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
  • 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
  • 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://trafffi.ru/strik?utm_term=goanimate+for+schools+remastered+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402717/normal_5f90fc46f16c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382639/normal_5fbe3cce8ea5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478923/normal_5fbc9ea08701d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382948/normal_5f96fc71a919b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407749/normal_5fa037cba2c44.pdfIn PDF document text
    • https://gejosabuvin.weebly.com/uploads/1/3/4/4/134457948/2dcdece3c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373520/normal_5f9686fd410c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376098/normal_5f8b12a8d6b4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388169/normal_5fa1b28b8c552.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374957/normal_5fb3d1f4ea777.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/37847209483.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12267a09-2f9e-4f3a-9c9a-a33558f57b0b/botelavaxubosaruxurufuj.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/emperor_clock_100m_movement_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1b98b62-d7f8-49e0-a6c4-ee013aa72170/ejercicios_frances_1_eso_con_solucio.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/46885757679.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_off0000c1dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1DC 5384 bytes
SHA-256: 8911616c3a68f01ef9a70458ee53234fa017455b5f670c48b18dc064df580acd
font_01_sfnt_off0000d417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD417 10968 bytes
SHA-256: a878c6496c223c13a96a5373f0f0077146832323c46e244700610042e64ec90e

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