Malicious PDF — malware analysis report

Static analysis result for SHA-256 95e6c155971f4897…

MALICIOUS

PDF

76.5 KB Created: 2021-04-04 05:18:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 1fb37929056664624a289e26d5d3a096 SHA-1: a2fdd83105f82be43a5d62f7e95af248e2cad0b1 SHA-256: 95e6c155971f4897663e7ff1f38f1d5537d8f5f6e3376b6391780fccc8584941
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to other PDF files, suggesting a link farm or redirection mechanism. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://soxebez.ru/strik?utm_term=eurydice+play+synopsis PDF link annotation
    • http://sarilaruzez.iblogger.org/bruchrechnen_aufgaben_mit_lsungen_klasse_6.pdfIn PDF document text
    • http://majovevalaji.sportsontheweb.net/1258227417.pdfIn PDF document text
    • http://tigitaja.iblogger.org/fabula_definicion_y_caracteristicas.pdfIn PDF document text
    • http://domobifotuza.sportsontheweb.net/brushless_motor_design.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c38d9960-f3a4-46a0-b266-cfc7836dd0ed.filesusr.com/ugd/a8d9c8_573daf6c01f34ddc83696827f7600aba.pdf?index=trueIn PDF document text
    • https://db6d201d-bdff-4648-9982-d9cfaac7639e.filesusr.com/ugd/98857b_d74a1ade162a459b91420e5d60356647.pdf?index=trueIn PDF document text
    • http://ribaxekag.epizy.com/business_planner.pdfIn PDF document text
    • https://76b44699-1094-4fd8-8d4a-70b7be8159c3.filesusr.com/ugd/c450b2_f73cbf804fa54e2b93f9115e7bbc52c4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/wekexud.pdfIn PDF document text
    • https://976edc35-935c-46de-9e6e-e225dbc25668.filesusr.com/ugd/0829d8_c528db3bc92549038ceeefa512ac4a9d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/black_and_decker_12_cup_programmable_coffee_maker_how_to_use.pdfIn PDF document text
    • http://lapetagalelan.myartsonline.com/bericht_schreiben_angabe.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/fijajosamadusozoruma.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/hack_wifi_wps_connect_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/jememiguwikudozom.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/winobe.pdfIn PDF document text
    • http://nizowozutagele.atwebpages.com/counterparty_credit_risk_book.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/tutu_app_ios_11._4.pdfIn PDF document text
    • https://7ae52be2-ba3c-41fb-8935-29281088223e.filesusr.com/ugd/affaa6_07605b53e1a44c229e2854e3c38eea7a.pdf?index=trueIn PDF document text
    • https://5b2b9875-3923-4577-9ef6-0527498c95e7.filesusr.com/ugd/4e6dd5_481e6242b06040a88fedb6415dee4035.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nitirew/1361236367.pdfIn PDF document text
    • https://06ebba1c-c738-45d4-b58d-83edbdcc9420.filesusr.com/ugd/b14caa_55976694b67846c7b43e8c3dbaec01cf.pdf?index=trueIn 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_off0000f04f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF04F 5128 bytes
SHA-256: 92c9b8842983d1264f48be5186771a54f290d6e9a2ecc102fe56320d8c886879
font_01_sfnt_off000101d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D6 10324 bytes
SHA-256: 8553369d00859ad4ed9bee9c65d17b28c5ef11c77e84893eb9457763546a88a2

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