Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea5032b27d3a33cb…

MALICIOUS

PDF

71.8 KB Created: 2021-03-14 23:12:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 397aa51e59a726c78e3048fc958b0c85 SHA-1: bd72389ef310c40a062969b1d2be4b626e963e24 SHA-256: ea5032b27d3a33cb37eb57929a67784b3189839750ae81c8303ab9397ef26d27
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to business strategy examples.

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://kuzutuzo.ru/award?keyword=bcg+matrix+examples+companies+pdf PDF link annotation
    • https://cdn.sqhk.co/puroneruk/fgKUU7t/16898430672.pdfIn PDF document text
    • http://maykistore.ru/what_should_a_receptionist_say_when_answering_the_phone24p3x.pdfIn PDF document text
    • https://cdn.sqhk.co/pizililiv/hgchgue/dummy_email_template.pdfIn PDF document text
    • https://cdn.sqhk.co/posiraki/hhS9Q8g/can_hit_beat_beerus.pdfIn PDF document text
    • http://gelchlen.fun/achyutam_keshavam_ringtonepl0yc.pdfIn PDF document text
    • http://axecheat7.xyz/modal_verbs_of_obligation_exercisekocv1.pdfIn PDF document text
    • https://cdn.sqhk.co/tadeketoxab/LgeNkWQ/rise_of_steel_game_mod_apk_revdl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b09046a-25c2-4bc8-913e-18b8ae6d0ef2/lururenowezadexivetopafo.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/91909020757.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/797f9659-2f33-4fe2-9e3e-93712ddbbc47/sidow.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/sajuberuweso.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/japanese_car_auction_sheet_carused_jp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e5d179d-f071-4668-82a9-95e464dfe1a5/23479467707.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/works_cited_page_format_for_websites.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/severity_and_priority_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c0a6710-0142-49e1-a592-75e70a42e52f/tone_it_up_reviews_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/laginekux/nugozoliso.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/tazojumujotizig.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/pudetadenobuledafoma.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_off0000db54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB54 5592 bytes
SHA-256: 5bf1204d6afd4be2b84ead4adc08746af599acb92350308c8e062553f2dc718a
font_01_sfnt_off0000ee48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE48 10480 bytes
SHA-256: 1aad0e7432bdf39ed9fda6f5440970fafe02f95b509e8970d8e13fa904881cba

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