Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8fcc41e07fe1610…

MALICIOUS

PDF

81.1 KB Created: 2021-03-20 21:27:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5508d1d0a0bd159c67d1d0de1258a72 SHA-1: 9d36bb66e189e8b8aa3bd60ff7eaf68b349218b3 SHA-256: e8fcc41e07fe1610c68ea6a1617aa433a81cf44adb272000cde17c9cd1f2a320
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body mimics a search result for a free PDF download, which is a common lure. The embedded URL `https://midufefew.ru/award?keyword=tula+rashi+boy+name+list+gujarati+pdf+free+download` is likely the initial point of contact for downloading the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://midufefew.ru/award?keyword=tula+rashi+boy+name+list+gujarati+pdf+free+download
    • http://istlan.space/delta_q_charger_profile_changeyqgok.pdf
    • http://femikig.22web.org/sotepebit.pdf
    • http://sale20.site/best_quotes_from_the_bell_jar9d1mg.pdf
    • http://tugrull.com/62377793047a9j4g.pdf
    • https://cdn-cms.f-static.net/uploads/4482645/normal_60306e507b5f0.pdf
    • http://prizinsta365.website/domestic_animals_worksheetsst07y.pdf
    • http://vienvozvrat.site/rupibekefl7ar.pdf
    • https://cdn-cms.f-static.net/uploads/4503533/normal_600c997373524.pdf
    • http://springwin.space/259075411375k3du.pdf
    • https://cdn-cms.f-static.net/uploads/4496818/normal_601e4ccee0b31.pdf
    • http://mstmail.space/45647648273h12i.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.indictrans.org
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/wixamupelinere/vuworesamasi.pdf
    • http://rilimopukalus.rf.gd/zaramufiv.pdf
    • https://s3.amazonaws.com/luxelula/27858462350.pdf
    • http://fusezumapaj.epizy.com/what_are_machine_learning_technologies.pdf
    • https://s3.amazonaws.com/bisiku/arduino_basic_projects.pdf
    • http://gufaxepelirub.rf.gd/celebrate_recovery_workbooks.pdf
    • https://s3.amazonaws.com/lizuseguwix/6792484914.pdf
    • https://s3.amazonaws.com/wewuxuviwar/winudozuzipizawajujinaf.pdf
    • https://s3.amazonaws.com/farowug/beech_mountain_ski_resort_weather_report.pdf
    • https://s3.amazonaws.com/zetubakuz/33130877812.pdf
    • http://tefokubekaxo.rf.gd/autism_spectrum_quotient_scoring.pdf
    • https://s3.amazonaws.com/vabemavuputenif/12430249896.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e07c.bin
1a445bd48eabd66122fec177f7b6d991f1a6a076bc0c3711954d325c0af4b827		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE07C 5696 bytes
font_01_sfnt_off0000f3bb.bin
5220e1443db760f4a8297b10d7a56d38693b042adb400229643b19462fd11e82		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3BB 4760 bytes
font_02_sfnt_off000102ef.bin
ff671c05b205bb2d830c53876ca19afc78bbb13f3c39a864b11b32af03be6250		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102EF 10928 bytes
font_03_sfnt_off00012821.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12821 4324 bytes

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