Malicious PDF — malware analysis report

Static analysis result for SHA-256 65fb299f630a3c0f…

MALICIOUS

PDF

77.6 KB Created: 2021-02-14 02:34:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 8060830d9dd712e14b7c142653033d34 SHA-1: d6e517b9820694e0ba9c4aa6153116235edcf057 SHA-256: 65fb299f630a3c0fd9b74df084490b03b07baa5f9d6cdeebeee16b6c9c52e1a3
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, 'https://bologen.ru/123?utm_term=can%2527t+take+screenshot+due+to+security+policy+incognito', suggests a phishing attempt related to security policies. Although no scripts were explicitly extracted, the PDF structure and heuristics point towards a phishing lure, likely intended to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/123?utm_term=can%2527t+take+screenshot+due+to+security+policy+incognito PDF link annotation
    • https://cdn.sqhk.co/suxunuke/hhIgcOv/circle_hero_song.pdfIn PDF document text
    • http://fastnoutservice.ru/tamilrockers_2019_new_movies_malayalamfsz83.pdfIn PDF document text
    • http://899themes-demo.ru/93224468097m598t.pdfIn PDF document text
    • http://deflecfcvy.best/manual_arcgis_10._5_espaolhrg0w.pdfIn PDF document text
    • http://verifiedbadge-lnstagram.com/wakikezafuwutabiwivihms4h.pdfIn PDF document text
    • http://nudistoff.club/finefazovazog0sh6o.pdfIn PDF document text
    • https://cdn.sqhk.co/wepugozotap/5J3Kuhh/boomerang_cartoon_app_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/rukeditele/dThggjc/bejodirutujavopivuwedo.pdfIn PDF document text
    • http://xovekofetovo.66ghz.com/gixalirigo.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/gdiaha9/mi_quizlet_questions.pdfIn PDF document text
    • https://cdn.sqhk.co/rakujolo/njczihz/snakes_and_ladders_board_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kedokonox.rf.gd/85228070610.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/delhi_police_mts_answer_key_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/mimewawafazanalog.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/adobe_acrobat_pro_dc_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/mowosexugo.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/business_plan_template_restaurant_canada.pdfIn PDF document text
    • http://fujuresaw.epizy.com/devufexetelomalipewik.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/renunciation_of_executor_form_uk.pdfIn PDF document text
    • http://powosudiruz.rf.gd/tecnologia_e_informatica_florencia_caqueta.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_off0000eaf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF2 5440 bytes
SHA-256: 546b9bcacd87ccb1b34e218c134009854153a62290fce86e2241e97dada422f5
font_01_sfnt_off0000fd7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD7E 12348 bytes
SHA-256: 2e53238b4365ed2cc31bde4edc6968dc975aa9e9f9598213ce0719f6d8ac8498

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