Malicious PDF — malware analysis report

Static analysis result for SHA-256 29b74c3b183c9444…

MALICIOUS

PDF

93.8 KB Created: 2021-02-27 12:53:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 03e212f7c0f269a13921a56c1078423f SHA-1: b8a10b4554ca717685fd765e2ce33913bcd2fb15 SHA-256: 29b74c3b183c9444bbefb6acd08383c83a96c816fe915e8d4824a864547bb386
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of malicious intent. ClamAV and ML classifiers also flagged this file as malicious, specifically as a phishing trojan. The presence of multiple unknown reputation URLs further supports the assessment that this document is designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/award?keyword=math+discourse+sentence+starters PDF link annotation
    • http://genusadnlo.space/808177682792p4nu.pdfIn PDF document text
    • http://triple-doska1.club/antecedentes_de_la_desercion_escolarufumh.pdfIn PDF document text
    • https://sosatiga.weebly.com/uploads/1/3/1/1/131164398/4805795.pdfIn PDF document text
    • https://bijawodit.weebly.com/uploads/1/3/4/8/134883407/2344068.pdfIn PDF document text
    • http://kanaxade.mygamesonline.org/badijasesesozinepefus.pdfIn PDF document text
    • http://xanimupa.22web.org/employment_application_form_florida.pdfIn PDF document text
    • https://merugerizun.weebly.com/uploads/1/3/4/3/134337850/kosobanuxaviluwodipi.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/bedubusikureginux.pdfIn PDF document text
    • https://cdn.sqhk.co/jizuxadif/GaSieid/ruworagelixid.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/Uz3efhc/jiwapikif.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/Sv1jemp/a_small_world_cup_unblocked.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/wupiwupiwot/ay_ft_fid_q_microphone_mp4.pdfIn PDF document text
    • http://kaloruligot.onlinewebshop.net/55690279578.pdfIn PDF document text
    • http://sazasewugekupej.onlinewebshop.net/mushoku_tensei_wiki_rudeus.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/apple_iphone_call_ringtone_free.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/stock_markets_to_invest_in_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/initial_d_series_guide.pdfIn PDF document text
    • http://reloroxegexe.epizy.com/armageddon_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/kexinopidewosefafut.pdfIn PDF document text
    • http://suredutika.rf.gd/62274318244.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_off000134c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134C8 5000 bytes
SHA-256: 9f69d8e6495415c5d9ce0b3f4105d27e19144d2337d36b11d77cdf79b577f526
font_01_sfnt_off000145cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145CC 10608 bytes
SHA-256: 1c0f5ef75a665f23fd6de95844909f12521676c94d10f62cff09db8359dc9954

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