Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7cb7d34c5ea6f79…

MALICIOUS

PDF

77.0 KB Created: 2021-03-30 06:56:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89c715baf770381963f0248eeb301741 SHA-1: 657bcc03591098d7085bbbcd4a7194d15b215fc6 SHA-256: b7cb7d34c5ea6f79753123c1774057be3651deac6caf251ea823f857594514b9
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The embedded URL `https://nipisod.ru/wix?keyword=cyber+liker+apk+old+version` suggests a lure related to software downloads, likely to trick users into downloading malware. No scripts were extracted, but the presence of external URIs and the overall detection by security tools points to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=cyber+liker+apk+old+version
    • http://lnstagram-verifedbadge.com/40556465561zadba.pdf
    • http://xukekutotipepet.iblogger.org/koveritolijoximipa.pdf
    • http://pexulabin.iblogger.org/97981447224.pdf
    • https://static.s123-cdn-static.com/uploads/4408004/normal_5ff9f75d0f1a6.pdf
    • https://static.s123-cdn-static.com/uploads/4382192/normal_5febc540bbd88.pdf
    • http://lujogaw.22web.org/20529462173.pdf
    • http://gallery-shop.site/how_to_trade_the_trend_in_forexxfvoo.pdf
    • http://erogan24.website/planificacion_estrategica_definicion_y_caracteristicasndblj.pdf
    • http://ruwemaroxi.22web.org/21376486112.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://492f55f4-3442-4b37-b17e-39d9f2f0ae8a.filesusr.com/ugd/7dfe85_ceeb2bf961ce468b9f06ebf710d74f13.pdf?index=true
    • https://6376acfe-5884-4251-b3d5-19a03c044549.filesusr.com/ugd/de3d83_2d7ee8c408c54c638fbb1bcd09e487f9.pdf?index=true
    • http://wolunotolebo.rf.gd/64586270711.pdf
    • http://varaxijolos.rf.gd/anthem_chapter_7-_12_questions_and_answers.pdf
    • http://fididebezewigex.epizy.com/fivepulis.pdf
    • http://doxanagudaseku.epizy.com/pibiwoxaj.pdf
    • http://vadawowugozopul.epizy.com/alangudi_pora_pulla_video_song.pdf
    • https://47a25507-5c4f-4e73-9b7c-0c49514c8174.filesusr.com/ugd/e00bd3_81fc229095854b4ca81ae18d96bfccf1.pdf?index=true
    • http://guduzazuki.epizy.com/wd_my_cloud_not_working_with_catalina.pdf
    • https://4c69d07c-928c-405f-a1ab-6436392658c4.filesusr.com/ugd/4c264d_4d6f2ca14829493ca39629dae27596a0.pdf?index=true
    • http://teredibake.rf.gd/iq_test_samples_with_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e201.bin
6e5afdd394ffb900ee130aff2ead77bf590da4827bfe126478bf30b8a3fc73ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE201 5048 bytes
font_01_sfnt_off0000f333.bin
e25197d154df77ad861abc96206e785de737c062d76b93066b5f45a9d1ec3f36		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF333 10956 bytes
font_02_sfnt_off000118e4.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x118E4 4324 bytes

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