Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb9ef64b2a25ea0…

MALICIOUS

PDF

87.2 KB Created: 2021-02-14 06:55:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 54b69865c8d8216c8d0fc918cea774cf SHA-1: 88588bbe0b878449f96c7e6fca9fc46bb068fad9 SHA-256: feb9ef64b2a25ea0e0bd273611c8e2b42e3c5560f073b3234a72c371b7fa7bcc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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/123?utm_term=love+me+if+you+dare+chinese+drama+eng+sub In PDF document text
    • http://detonic-ro.website/zodopojvf0c.pdfIn PDF document text
    • https://cdn.sqhk.co/domojegibuze/bkpgdIc/56171460788.pdfIn PDF document text
    • http://milanomoda.site/62827225053vbymh.pdfIn PDF document text
    • http://datingsexchat.site/disidanuf15mhf.pdfIn PDF document text
    • http://kibizife.iblogger.org/kujapusonililikofuw.pdfIn PDF document text
    • http://tozokexijuxizis.iblogger.org/97647216932.pdfIn PDF document text
    • http://particulieres-societegenerale.best/4403026468883qi3.pdfIn PDF document text
    • http://lnstagramcopyrightcenter.com/80655867536cv8ei.pdfIn PDF document text
    • http://jasavutarapif.22web.org/51187652962.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://satuvet.epizy.com/set_up_aol_email_account_on_android.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/house_of_cards_cast_reporter.pdfIn PDF document text
    • http://kisepupiregeseb.rf.gd/aircraft_structures_for_engineering_students_solution_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/boiler_efficiency_calculation_example.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/espn_sports_reporters.pdfIn PDF document text
    • http://rebikesumusosu.rf.gd/segudugulidodap.pdfIn PDF document text
    • http://meduzifovum.epizy.com/favonanimiw.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/mejomanelax.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/7232785273.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE200 16104 bytes
SHA-256: 16c46fb68e04ed4e9f9c1fe2b953746ab95a3d225a06a6212082faa018e6c2bc
font_01_sfnt_off00011460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11460 5648 bytes
SHA-256: d75b2e8f7a48eef470d0a6156727b4cdfab266ef0c1c7e912354c1887e4b17f9
font_02_sfnt_off0001277b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1277B 10976 bytes
SHA-256: b10d812a7aa00c09b63a2c488181948bdecf5947f838691f3778006a6236eef3

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