Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2653db94b63f671…

MALICIOUS

PDF

75.8 KB Created: 2021-03-02 16:51:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: e09299bbe89b79958ca52133eb576393 SHA-1: 9e672c01d053f196aeaf905511fa2ee8d4e3ec11 SHA-256: e2653db94b63f6714564c687bd997364616ddef236a97b6cdb7ecfeafee4f08c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'jottigo.ru', which is highly suspicious. The document body, though partially corrupted, suggests a lure related to 'Yiruma piano music book', indicating a social engineering attempt to entice users to click the malicious link.

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://jottigo.ru/strik?utm_term=yiruma+piano+music+book PDF link annotation
    • http://rujisuki.mygamesonline.org/medawuzutapaniziso.pdfIn PDF document text
    • https://cdn.sqhk.co/litalile/PjbgeBF/drop_stack_ball_game_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kapidibewomu/Nijicgf/infectonator_3_all_reporters.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491686/normal_5ffeab7eb1abf.pdfIn PDF document text
    • http://vumamanepu.sportsontheweb.net/how_to_write_a_book_summary_examples.pdfIn PDF document text
    • https://lizakefamejoxen.weebly.com/uploads/1/3/1/3/131384135/a2dc7d2fa7d8b8.pdfIn PDF document text
    • https://cdn.sqhk.co/nujusowidom/2Hmjchi/royal_caribbean_cruise_stock_price_in_2019.pdfIn PDF document text
    • https://sowibize.weebly.com/uploads/1/3/5/3/135348762/1a3ab3d765763.pdfIn PDF document text
    • https://ravemazezaj.weebly.com/uploads/1/3/4/8/134885195/nerav-wakupomubis.pdfIn PDF document text
    • https://wigikeketiru.weebly.com/uploads/1/3/1/4/131406435/adf81ac63b53e.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/jhafgiu/dipijoli.pdfIn PDF document text
    • http://nejupike.mygamesonline.org/sulosegowoxudazowitu.pdfIn PDF document text
    • https://popetufuwude.weebly.com/uploads/1/3/1/4/131483025/90a6013.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/hhhjcPm/67371017708.pdfIn PDF document text
    • https://kajuzenutojaso.weebly.com/uploads/1/3/4/6/134631714/1754117.pdfIn PDF document text
    • https://paparudedolenod.weebly.com/uploads/1/3/4/6/134686514/pawazolekedixatis.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/zidosozawok/surat_al_waqiah_beserta_artinya.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/a_discovery_of_witches_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/ssc_result_2019_bd_full_marksheet.pdfIn PDF document text
    • http://rexefobixavater.myartsonline.com/vampire_diaries_season_6_episode_10_full_episode.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/ateneo_de_davao_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/lupijufuwofonijixekuzi.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_off0000ea79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA79 5212 bytes
SHA-256: 8ba246e0bcffc1bb079d214ce8978a918a92c750053ea145555fe076b1995246
font_01_sfnt_off0000fc15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC15 11228 bytes
SHA-256: 4b584a1c6e94b1cefec8ba18cd1c82a81d48372ec50b80f9e1ad065a7a7b7e10

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