Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee98c87eaa08dd2f…

MALICIOUS

PDF

74.4 KB Created: 2021-03-05 19:41:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 4f8c0e5bf798716f3214e02dd54c71e2 SHA-1: c1a89ae71990ddefb95afc84a5a1712464d94dda SHA-256: ee98c87eaa08dd2f1e233ab56c5560f876a720301939daa05cc2fa73b421aaad
104 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded external URI pointing to 'https://zajinet.ru/123?utm_term=timex+wr50m+watch+manual', which is likely part of a phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports this, suggesting a lure to trick the user into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://zajinet.ru/123?utm_term=timex+wr50m+watch+manual PDF link annotation
    • http://notdull-eng.online/wutufuxikabisiivm1m.pdfIn PDF document text
    • http://investmag.org/gezunnkpes.pdfIn PDF document text
    • http://palaxofivuleduj.medianewsonline.com/wisdom_the_monk_who_sold_his_ferrari_quotes.pdfIn PDF document text
    • http://musofiron.ru/mutepirejidurewekipaxepvzh7x.pdfIn PDF document text
    • https://cdn.sqhk.co/loxinesupiva/ZjeulBt/dual_monitor_wallpaper_3840x1080_autumn.pdfIn PDF document text
    • http://feludekinopotas.scienceontheweb.net/98586919163.pdfIn PDF document text
    • http://tk-pobeda.site/how_to_become_a_handwriting_analystm5og4.pdfIn PDF document text
    • http://iwhite.space/20689053412pilw6.pdfIn PDF document text
    • https://cdn.sqhk.co/xanodujijefu/cOOgVjg/ketunitodotejifit.pdfIn PDF document text
    • http://muzhskoizhurnal.ru/semiconductor_devices_physics_and_technology_3rd_ed._s._m._sez_wileyg99mg.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/7zZ2B8l/vofezazakubepi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jojitagifuva/indian_frro_c_form_login.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/go_math_grade_6_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/84489746946.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/fosipudorakodadavamu.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/rhythmic_exercises_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/dikukafotilokisifo.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/gutufe.pdfIn PDF document text
    • http://tososite.onlinewebshop.net/the_hollow_men.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/android_guideline_barrier.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/30445227533.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD747 5008 bytes
SHA-256: f5be9d18130fba06ed1a9569135dacb7fdb9dd0d682c24f46f99777d41849dc8
font_01_sfnt_off0000e838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE838 11132 bytes
SHA-256: 52611a031877e4841f603b26dfb3ab99867a75bf572f471a820dd956ff3ce1a6
font_02_sfnt_off00010dd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD8 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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