Malicious PDF — malware analysis report

Static analysis result for SHA-256 e71a372774ee0774…

MALICIOUS

PDF

80.7 KB Created: 2021-05-15 18:41:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7d5da51022dc1851db7eb882245aa106 SHA-1: 3c6bb59fc3d78cc93d175a5a38f4a3b1b617829f SHA-256: e71a372774ee0774470ecaeeb342dd05d3b3b2d6f702db85da5dad7a257cf774
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a malicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to appliance error codes, suggesting a phishing or scam attempt.

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://xezojetit.ru/strik?utm_term=kenmore+elite+washer+he5t+error+f21 PDF link annotation
    • https://cdn.sqhk.co/gabazumad/IJGmdhi/candy_making_molds_near_me.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/47734098814.pdfIn PDF document text
    • http://lirinevewafa.mypressonline.com/2010_chrysler_town_and_country_owners_manual.pdfIn PDF document text
    • http://kusuraluzi.iblogger.org/lutujutivorevem.pdfIn PDF document text
    • http://rimiminigi.22web.org/55904118866.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/cidRicA/nuzuk.pdfIn PDF document text
    • https://cdn.sqhk.co/xupumekejaxa/geZejev/ashes_cricket_2018_game_pc.pdfIn PDF document text
    • http://faromobipon.22web.org/tuzepibe.pdfIn PDF document text
    • http://pazobano.iblogger.org/bidapapigubiw.pdfIn PDF document text
    • http://nefuwumimo.iblogger.org/pdf417_barcode_font_free_download.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/minaxigevani/30595628378.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/what_is_the_income_limit_for_pregnancy_medicaid.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/wool_hugh_howey_age_appropriate.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/dyson_dc41_change_over_hose_replacement.pdfIn PDF document text
    • http://bejanifezilo.atwebpages.com/yasin_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/hootsuite_we_are_social_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/61027901691.pdfIn PDF document text
    • http://kikujebi.epizy.com/67785805929.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_off0000fb36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB36 5376 bytes
SHA-256: 3d4f4b5194ca41a39087773a7b1628d278f30253997dbb98c466aa45e4b23ed7
font_01_sfnt_off00010d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D78 11704 bytes
SHA-256: bbc5fa23c952d59ae5c4b1b093008d25f0ce950b31406c966cfdec41eee5ae37

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