Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d5badd3589c63e…

MALICIOUS

PDF

73.9 KB Created: 2021-04-22 00:09:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a9bf7ce8b1beae66752074af8b39c0dc SHA-1: bf34a86b6a80a7f13c4f3333b7abb004683d61f7 SHA-256: 30d5badd3589c63e3f2fbaf70d0fce0c642eeaf7238a8331430c144f61627392
254 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are flagged as malicious or part of a link farm. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document instructs the user to copy and paste content into a shell, a common tactic for executing downloaded payloads. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • 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
  • 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://crophysi.ru/strik?utm_term=how+to+transfer+pdf+to+kindle+fire In PDF document text
    • https://xatikofaf.weebly.com/uploads/1/3/0/8/130814669/pejak.pdfIn PDF document text
    • http://zagozogenef.sportsontheweb.net/wovowofu.pdfIn PDF document text
    • https://wiguvufa.weebly.com/uploads/1/3/0/7/130775639/dotigakitomov.pdfIn PDF document text
    • https://cdn.sqhk.co/kobewudojuvo/WkHihhf/ti_nspire_graphing_calculator_online_free_use.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/Ugegfjj/welufum.pdfIn PDF document text
    • http://riwalimuj.scienceontheweb.net/baroque_guitar_tablature.pdfIn PDF document text
    • https://lapokatodulobak.weebly.com/uploads/1/3/5/3/135347459/3353376.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/IZkwFie/how_to_cook_turkey_bacon_wrapped_asparagus.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/i6Nt4ox/who_s_your_daddy_game_tips.pdfIn PDF document text
    • https://virubavu.weebly.com/uploads/1/3/4/7/134755547/290a5f4f44c.pdfIn PDF document text
    • https://wimatuzufuduwo.weebly.com/uploads/1/3/1/8/131871585/bfa99a81d138.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/savukojubusum/lituduvidofaneji.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/writing_task_2_sample_answer_band_7.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/dalir.pdfIn PDF document text
    • http://zowofiz.myartsonline.com/92480763815.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/48698587491.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/transgender_studies_reader.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/employment_notice_letter_template_uk.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_off0000e239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE239 5152 bytes
SHA-256: 333c88e16002f3dc1f70255bab475d152ef3812ed27a551cfaaffe3a94f17ee2
font_01_sfnt_off0000f3e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E4 11384 bytes
SHA-256: 6fd1d5c502d651f547e5fdceb0f77e70ffd2a53d7a44bf21493252a63a957781

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