Malicious PDF — malware analysis report

Static analysis result for SHA-256 30f5ad688ea08cb0…

MALICIOUS

PDF

69.8 KB Created: 2021-03-16 02:26:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: a0a1ec34b0b0fb3fd46d3a9802006396 SHA-1: cfeeaafdc573b9ab286a7733aa69ed19c982dd26 SHA-256: 30f5ad688ea08cb036fd6fef7ba5758a64c6c5fb5f228193413d8812850d1805
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'https://mezovuduw.ru/wix?keyword=verbs+that+start+with+hosp', which is a strong indicator of a phishing or malware distribution attempt. The PDF structure and embedded URI suggest it's intended to be delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=verbs+that+start+with+hosp PDF link annotation
    • http://tomolijoponix.mypressonline.com/formato_de_recibo_por_honorarios_sunat.pdfIn PDF document text
    • https://cdn.sqhk.co/vavefamixivi/hRgdOij/1941_world_war_strategy_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/wozejodes/ggKBigd/40781883805.pdfIn PDF document text
    • https://cdn.sqhk.co/zexetiminav/hcYxieF/swing_design_cricut_maker_bundle.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/63je9ii/visit_a_city_barcelona_1_day.pdfIn PDF document text
    • http://argo-tourism.com/26048214004ucgfm.pdfIn PDF document text
    • http://svarka-aurora.online/web_service_rest_api_node.jspwlj6.pdfIn PDF document text
    • https://cdn.sqhk.co/jigidokasaga/t1jehhf/makarusalomuwazoxo.pdfIn PDF document text
    • https://cdn.sqhk.co/maxegugej/gcV2h5N/lunabuzoluboj.pdfIn PDF document text
    • http://gufutaca1.xyz/19784791135lsb40.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluzezufe/igVQjaB/ben_10_games_free_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/daxerarugak/iiigejH/tomepag.pdfIn PDF document text
    • https://cdn.sqhk.co/xubupigegi/ikib4Qn/witch_magic_bubble_shooter_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/woxemumi/eWCiig8/favovudowifuv.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/faxaxos/fokikijeruzofudenafunu.pdfIn PDF document text
    • http://zasuwunal.myartsonline.com/february_2020_marathi_calendar.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/44018945866.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/52277126625.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_off0000d314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD314 5072 bytes
SHA-256: 3148b297786b0d693e7071f1fbad242d4be676be5c26a5b803318b53ce011b20
font_01_sfnt_off0000e45c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE45C 11348 bytes
SHA-256: d0d68785e3fae33821bc524c75609ae1a036f913feb54ebe84585ae144a3f4c2

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