Malicious PDF — malware analysis report

Static analysis result for SHA-256 676c01dd6e5f1f6b…

MALICIOUS

PDF

71.5 KB Created: 2021-02-26 21:26:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7c943ec3c3adba60b71f6420429b1e9a SHA-1: 879f7b4c77e254f2f0496e72e932c32fd8ebfe75 SHA-256: 676c01dd6e5f1f6b05d139baad8785f290da3e6aa9b1bc5785c005bf69127861
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 URL pointing to a suspicious domain, which is likely used to host or deliver the malicious payload. The document body, though heavily obfuscated, contains keywords related to hacking and APKs, reinforcing the phishing lure.

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://nipisod.ru/wix?keyword=hack+true+skate+ios+apk PDF link annotation
    • http://help-feedback-amzn8.xyz/guduxifufomumo3c32z.pdfIn PDF document text
    • http://brandframeb.com/chamma_chamma_new_song_video_tinyjukepu0nq.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/nespresso_lattissima_pro_original_espresso_machine.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485576/normal_600a8f2772405.pdfIn PDF document text
    • http://hayatevesigar.online/how_to_draw_scary_monsters_easy2kru6.pdfIn PDF document text
    • http://online-sistem.site/separator_sheet_workers_compensation_documentk6plo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443610/normal_600b21a1910df.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://supuwevul.atwebpages.com/zikubinuvurorarexo.pdfIn PDF document text
    • http://tepokubomime.rf.gd/which_country_has_the_worst_prison_system.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/fesajuzivovudoxuroje.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/ableitungsregeln_bersicht.pdfIn PDF document text
    • http://pazixurofuni.epizy.com/sofikigikisalivaxokor.pdfIn PDF document text
    • http://zuvineduwofuxo.epizy.com/56282158199.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/16735729481.pdfIn PDF document text
    • http://kajufikuxididon.rf.gd/lol_kayn_build_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/the_handbook_of_bilingualism_and_multilingualism.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_off0000dd27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD27 4920 bytes
SHA-256: 7c16d68550b5474e8f87d64c013d9a8379eab6b4846ba47b4d0a5ad7d6c59b11
font_01_sfnt_off0000edf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF3 10304 bytes
SHA-256: c22da7a5a6c32a7ef947c1f0404b973c848195bcd994350c4d40341ed0871db6

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