Malicious PDF — malware analysis report

Static analysis result for SHA-256 166f680da77a3567…

MALICIOUS

PDF

70.1 KB Created: 2021-02-21 04:06:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 37ad6715b1cf21a75fcf82b15f3533f0 SHA-1: d7cbecd0122ebb6e54c4fea8b1bf3ed3c5aa4df4 SHA-256: 166f680da77a3567db9c0d1f2a88cf370cef12984497251f8d0072ac6f8be7fe
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious and likely phishing-related. It contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or redirection mechanism. The document body, though heavily obfuscated, contains a query about a TV show, likely a lure to encourage interaction with the embedded malicious links.

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://jacksth.ru/strik?utm_term=what+time+does+the+game+show+the+wall+come+on+tonight PDF link annotation
    • https://xuboxale.weebly.com/uploads/1/3/1/4/131452808/zokizefosik_gukugolu_datizitugojabir.pdfIn PDF document text
    • http://hargotel.xyz/69686352302dmkh.pdfIn PDF document text
    • https://widedajixefur.weebly.com/uploads/1/3/5/3/135312737/fatel-lenebudol-sodufomexux-duxeladelavatum.pdfIn PDF document text
    • https://roxobirunuj.weebly.com/uploads/1/3/4/0/134096027/mukexularuzun.pdfIn PDF document text
    • https://xivapumi.weebly.com/uploads/1/3/1/6/131606059/9123cfe515fa6d4.pdfIn PDF document text
    • http://instacopyrighthelpteam.com/building_maintenance_schedule_template_free_downloadvlccc.pdfIn PDF document text
    • http://raicen.com/7644587990753d8o.pdfIn PDF document text
    • http://teaapple.space/delhi_bus_appi3q1o.pdfIn PDF document text
    • https://lanapovo.weebly.com/uploads/1/3/1/4/131437145/bafemedizu.pdfIn PDF document text
    • https://wejuwano.weebly.com/uploads/1/3/1/1/131163718/617307.pdfIn PDF document text
    • http://wisecreditscore.info/retoxaxey6ym9.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/megodipewukitoj/national_dysphagia_diet_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/less_stylesheet_language.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/zaremoge.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/college_football_picks_week_13_bleacher_report.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/bolted_connection_calculation_example.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/lg_an-_mr3005_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/winters_bone_cast.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_off0000d637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD637 5360 bytes
SHA-256: 583d6548b183834fd23d50af5f9ccb6733d3730820826d9c7859aaf256b5e80b
font_01_sfnt_off0000e86c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE86C 10176 bytes
SHA-256: e329dfbc24a1830df903074eeffee1ab630ea73d9457fb227514fb907535f5a7

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