Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed6dbc03aac17ab…

MALICIOUS

PDF

82.2 KB Created: 2021-03-01 07:17:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 43ed7e419afc90d82248d56837f2f0a5 SHA-1: 13499e53f1587939213f2b53076f50bc37ba523a SHA-256: bed6dbc03aac17ab06fe889161378ede4c48782046267bb836d0c408b8070112
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the 'PDF_SEO_LINK_FARM' heuristic, suggesting a malicious intent to redirect users to potentially harmful websites. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics further confirm its malicious nature. The embedded URLs, such as 'https://bologen.ru/123?utm_term=sixth+and+seventh+books+of+moses+english+version' and 'http://lilubaxubaxulu.sportsontheweb.net/jifibazufikoxabofa.pdf', are indicative of a phishing or content-luring scheme.

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://bologen.ru/123?utm_term=sixth+and+seventh+books+of+moses+english+version PDF link annotation
    • http://lilubaxubaxulu.sportsontheweb.net/jifibazufikoxabofa.pdfIn PDF document text
    • http://fenofojerafama.22web.org/tapotilezajatewagimus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422161/normal_6006384b5591f.pdfIn PDF document text
    • http://sowopezamiw.medianewsonline.com/29731157309.pdfIn PDF document text
    • http://fekevopimibun.sportsontheweb.net/wenogazed.pdfIn PDF document text
    • https://galanutix.weebly.com/uploads/1/3/4/5/134591813/kusaz.pdfIn PDF document text
    • http://simopuvoramawu.mywebcommunity.org/gezepiwazagafuxe.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/juzowilipi/heartbeat_tattoo_wallpaper.pdfIn PDF document text
    • http://zitulogakapede.myartsonline.com/mantis_garden_tillers_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/xirolesesowel.pdfIn PDF document text
    • http://farefimejige.rf.gd/physical_chemistry_for_the_biosciences_solutions_manual.pdfIn PDF document text
    • http://javewexo.epizy.com/xanagalosatanukidowi.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/back_wars_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/como_descargar_whatsapp_web_en_mi_android.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/44989420680.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_off0001034e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1034E 5756 bytes
SHA-256: c6ffc53a2d1971770c73d0935275f40fce0c295ddf346bca490cdb892bb13d50
font_01_sfnt_off000116bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116BF 10628 bytes
SHA-256: e2d658ea1dcf87d85b358ff10af67401560ab1ba17af7b72fa0c89129dcd6439

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