Malicious PDF — malware analysis report

Static analysis result for SHA-256 f60b809f62b10e65…

MALICIOUS

PDF

75.5 KB Created: 2021-02-26 23:07:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7c7a3fd73fcca5111cd46e2e73131958 SHA-1: 2b5a23523627724c0c59758d9d9d3c012aaf4249 SHA-256: f60b809f62b10e654d34f5eea9607ff48b7d1a9b3e890472c2610eeb4a6e8bd6
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/strik?utm_term=best+keto+diet+book+for+beginners+2020 PDF link annotation
    • http://nufurimuler.iblogger.org/thinkorswim_active_trader_custom_template.pdfIn PDF document text
    • http://vodabutopidaru.getenjoyment.net/laler.pdfIn PDF document text
    • https://jikuvubavul.weebly.com/uploads/1/3/5/9/135964228/cd560.pdfIn PDF document text
    • http://razagewodun.iblogger.org/create_fillable_template_in_word_2013.pdfIn PDF document text
    • https://cdn.sqhk.co/nebinefis/jMjajgZ/38407434857.pdfIn PDF document text
    • https://tegupovo.weebly.com/uploads/1/3/0/7/130775278/ab66923922.pdfIn PDF document text
    • https://nutotawi.weebly.com/uploads/1/3/0/8/130813366/4647743.pdfIn PDF document text
    • http://terugate.mypressonline.com/14135954226.pdfIn PDF document text
    • https://cdn.sqhk.co/kamavedes/jiBhbja/blocky_lava_facts.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fonawemosel.epizy.com/fallout_new_vegas_mods_guide.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/resumen_del_libro_tus_zonas_erroneas_capitulo_2.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/gumeroxavifokiporixe.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/pevokarirofevitikubabofip.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/chocolate_movie_filmywap.pdfIn PDF document text
    • http://zuputes.atwebpages.com/gitexuwufonufakafedo.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/60486939455.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/76750348028.pdfIn PDF document text
    • http://kodinola.rf.gd/acc_aha_guidelines_for_hypertension_2017_ppt.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_off0000dc2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2E 5148 bytes
SHA-256: f0e8fa8a00aee1436dd402dd3623c950c8fc3f6f53d9bd1cafec0f1111389dc5
font_01_sfnt_off0000edc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC7 10840 bytes
SHA-256: 093a30fa0e220795119d7cd910a050344797e00d3e9d75a34af395148e84afd3
font_02_sfnt_off000112b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112B0 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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