Malicious PDF — malware analysis report

Static analysis result for SHA-256 db2fb4a45314faaf…

MALICIOUS

PDF

71.3 KB Created: 2021-02-23 17:29:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: dde94b2d46cb14fa57da008626f49f5b SHA-1: e002fbe7507e0972ab3cb2fe4b84587763dd7595 SHA-256: db2fb4a45314faaf1d1a6ae7ccf9672611c9a7cc8c6a554125c23ba5e84d1adc
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. The ML classifier and ClamAV detection further confirm its malicious nature. The document body, though heavily obfuscated, suggests a lure related to game cheats, likely to trick users into visiting the malicious URL.

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://seumenha.ru/wix?keyword=my+little+pony+game+money+cheats PDF link annotation
    • http://notevidesi.22web.org/afficher_mot_de_passe_wifi_dans_android.pdfIn PDF document text
    • https://cdn.sqhk.co/wenejusuzixe/LidQ3jd/boardgamegeek_top_100_party_games.pdfIn PDF document text
    • https://cdn.sqhk.co/tosijoxopum/U3hjMij/83477048878.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404133/normal_600a078db095d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414166/normal_5fe98c7824679.pdfIn PDF document text
    • https://cdn.sqhk.co/sisalubitot/SM1gjJB/preschool_learning_apps_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484376/normal_5fed7445c09ea.pdfIn PDF document text
    • https://cdn.sqhk.co/rodofusavivi/eycgjmB/unscramble_words_maker.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481671/normal_5fc56bc4736c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372707/normal_601b530a4b375.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/wegemebufojafak/almidon_en_heces.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/pamifa.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/goregabisepixijikewu.pdfIn PDF document text
    • http://vufosal.rf.gd/android_11_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/ielts_gt_formal_letter_samples.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/lamimafafurapix.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/affidavit_of_service_form.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_off0000d936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD936 5356 bytes
SHA-256: ed1f62c2b7e86f2e59290fe06b74e32307b4513ebb803b838e2f4d639526d2a8
font_01_sfnt_off0000eb66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB66 10796 bytes
SHA-256: 9e766a38824976fcfe6e0357d03a331a25d356f8c094f8a6e02ddf2252fc9017

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