Malicious PDF — malware analysis report

Static analysis result for SHA-256 ece6a8c573334ffe…

MALICIOUS

PDF

89.0 KB Created: 2021-04-05 05:38:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: e439712b1dbc4d20189bd64a2242375f SHA-1: 44580c05df99cf3581797c04087dd6499d5aef9d SHA-256: ece6a8c573334ffe6fd0ba32ef32419b23546bada77fef2239ebee3c4f4b33a4
194 Risk Score

Malware Insights

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

This PDF document is identified as a phishing lure impersonating Amazon, aiming to steal user credentials. It contains multiple external URIs, including one hosted on a disposable domain and another pointing to a Weebly subdomain, which likely serves as a redirector to a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://rifijilaguselud.weebly.com/uploads/1/3/4/8/134846829/nidawujutizavi_mugexapugaruruw.pdf.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://pelibifir.ru/wix?keyword=convert+amazon+invoice+to+pdf PDF link annotation
    • http://lordtrans.ru/192348352470g54j.pdfIn PDF document text
    • http://vizazovabula.mywebcommunity.org/janoxesofurewizur.pdfIn PDF document text
    • http://kamini33.ru/platformer_games_2019wacbb.pdfIn PDF document text
    • http://harmony-market.ru/monitor_cardaco_speedo_80621g0evnp_-_preto_e_vermelho1a0nu.pdfIn PDF document text
    • https://rifijilaguselud.weebly.com/uploads/1/3/4/8/134846829/nidawujutizavi_mugexapugaruruw.pdfIn PDF document text
    • http://mejuzuw.scienceontheweb.net/24809095333.pdfIn PDF document text
    • http://peuly.xyz/what_foods_causes_fodmap_intolerancewiy4t.pdfIn PDF document text
    • http://sawedes.mywebcommunity.org/plus_two_ncert_biology_textbook_download.pdfIn PDF document text
    • http://delaem-sami.online/personal_assistant_resume_summary_samplesg1itw.pdfIn PDF document text
    • https://tawajuwu.weebly.com/uploads/1/3/4/8/134850210/zagutarona-kubipap.pdfIn PDF document text
    • https://nupigefaxobabu.weebly.com/uploads/1/3/1/0/131070289/229565.pdfIn PDF document text
    • http://kyukty68.xyz/mol_cell_biol_res_commun_impact_factor8do9s.pdfIn PDF document text
    • http://lnstagramcopyrightcenter.com/non_ssa_1099_form_californialn7t5.pdfIn PDF document text
    • http://creditscorefix.info/how_to_fix_epson_l210_printer_paper_jams13kn.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/viboxikuz/dugikuki.pdfIn PDF document text
    • http://ludugatitabi.atwebpages.com/weight_lifting_workout_plan.pdfIn PDF document text
    • http://jitawidavez.atwebpages.com/44287365488.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/tamuvaravakolupo.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/rosemarys_baby_2020.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_off00011b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B4E 5108 bytes
SHA-256: af20d589f623bacced054eb077ff61179ef93666cd41c4cfdbbf8faa6a2abff9
font_01_sfnt_off00012ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CA8 11940 bytes
SHA-256: 4015be2bad5dcd925140dcf1444b84ec8d299ff73f20408a19da819d9c6a9cba

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