Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5beac02956272cc…

MALICIOUS

PDF

83.5 KB Created: 2021-03-14 01:24:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 56327b448fc745952fe8353e0d22259e SHA-1: cf1002a625d0fc1d07948d3d8a43fed991ab16bb SHA-256: d5beac02956272ccaca0fb9ef90f6474da0318aef6d140c08d9da4f65101c201
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The embedded URL `https://leonvi.ru/123?utm_term=narrative+appraisal+report+sample` is likely used to deliver a phishing page or a secondary payload. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to exploit vulnerabilities or trick the user into navigating to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://leonvi.ru/123?utm_term=narrative+appraisal+report+sample PDF link annotation
    • http://study-english-05.site/ligoraxijafujodn6h87.pdfIn PDF document text
    • http://keepmaxi.space/lexus_is300_2jzgte_swap_automaticbhhht.pdfIn PDF document text
    • http://lemovifi.iblogger.org/sports_world_11_app.pdfIn PDF document text
    • http://bitcoins-profits.com/55651022008brkcd.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/bugutaj/podidogifepiseloba.pdfIn PDF document text
    • http://revifobatuge.rf.gd/piano_sheet_music_notes_and_symbols.pdfIn PDF document text
    • http://pobiludorigogok.epizy.com/bizamabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c0b2993-9405-4b14-ada9-fc2a7f10d635/16358876827.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/action_and_linking_verb_worksheet.pdfIn PDF document text
    • https://79d86aa2-23c4-4aa0-a0dc-c16ac59ae55d.filesusr.com/ugd/ecb701_995d30ffc4364ed6a02efe8662c0fa9c.pdf?index=trueIn PDF document text
    • http://nitigij.rf.gd/dikolo.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/excel_spreadsheet_budget_template_free.pdfIn PDF document text
    • http://tereralubo.epizy.com/79954463439.pdfIn PDF document text
    • http://pulavoxojefu.rf.gd/where_does_green_eggs_and_ham_take_place.pdfIn PDF document text
    • http://pagazefariduw.rf.gd/81032908875.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/55769013141.pdfIn PDF document text
    • https://9abff256-b119-4e75-a612-dfc075f5428e.filesusr.com/ugd/c73517_73558575a5674ef0b0b404e3f5c68ed4.pdf?index=trueIn PDF document text
    • https://64e18f06-8a0e-4dc1-8427-9dd81b4bff36.filesusr.com/ugd/baa514_eeb79ea1b7f54dfc8cd83e12c01f74d8.pdf?index=trueIn PDF document text
    • https://c7fb3737-a2fb-4e06-b71d-f78b648bb0a4.filesusr.com/ugd/a9248e_f6c6f2a2b3f44b95a319d30e21e087e6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd40e23b-4566-40a0-b724-0c6c7742d78b/34657704312.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/alberghiero_formia_contatti.pdfIn PDF document text
    • http://lifugefumiwikoz.epizy.com/10207241570.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_off0000fdec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDEC 2900 bytes
SHA-256: 40ce0bc9b113ef031639604f059b60aa9f1e41b097d60e75bfbf620cccc66306
font_01_sfnt_off00010830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10830 4992 bytes
SHA-256: ecc79d5187e07e786f775b0236ea8a3b8a08ca2a1da84e48619679fec9142cca
font_02_sfnt_off00011920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11920 10820 bytes
SHA-256: e674f51e4979dfca6cdd60aef26bd3187035c0538bd9ce4910e98cf24576be1e

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