Malicious PDF — malware analysis report

Static analysis result for SHA-256 1940519984d902e1…

MALICIOUS

PDF

79.1 KB Created: 2021-05-12 22:41:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 7227c9be24b02b8d0a6736fae4c4df38 SHA-1: 492235cb6bed56000f8ed5ad07463dcdbeb87123 SHA-256: 1940519984d902e12d652fc5aaa4f342081cf4ef04c925325f405a965f3b6dca
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, indicating a high likelihood of malicious intent. It contains embedded URLs, with the primary one being https://midufefew.ru/strik?utm_term=abc+poems+examples, suggesting it's used for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to 'abc poems examples', which is likely a deceptive pretext to encourage users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/strik?utm_term=abc+poems+examples PDF link annotation
    • http://lamisorosasam.mywebcommunity.org/70601272163.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/zunagovanarafawowimepob.pdfIn PDF document text
    • https://cdn.sqhk.co/munuzimevu/hBNCZY3/al_quran_tilawat_audio.pdfIn PDF document text
    • https://cdn.sqhk.co/zisuxemop/jfhaJkB/64441346431.pdfIn PDF document text
    • https://cdn.sqhk.co/nimotixalulo/6jbiahd/selamufapibuvuz.pdfIn PDF document text
    • https://cdn.sqhk.co/litalile/ObhiTjc/csr_classics_hack_ios_download.pdfIn PDF document text
    • http://filozajerezabi.getenjoyment.net/jofodamosukug.pdfIn PDF document text
    • https://cdn.sqhk.co/mozulunilex/hghic88/ximibujimasobax.pdfIn PDF document text
    • https://cdn.sqhk.co/xegigujatefa/fLqsGgg/32535111558.pdfIn PDF document text
    • https://cdn.sqhk.co/wojipezusax/jch9jaV/best_social_media_downloader_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinirumawe/x2zlhaU/pawoleburapanitofukonun.pdfIn PDF document text
    • https://cdn.sqhk.co/visesefider/jciggf1/wiguz.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/jc0x0jj/guworonaxogulaxelagijigu.pdfIn PDF document text
    • https://cdn.sqhk.co/zofukumane/ifibjdS/sejobafonolumekibexu.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/cQhhGMz/lamulizowegolagewemaw.pdfIn PDF document text
    • https://cdn.sqhk.co/tiviluluje/tgggeGd/combining_like_terms_pyramid_style_answer_key.pdfIn PDF document text
    • https://cdn.sqhk.co/xeveweno/ewh00AK/togilubigazosupake.pdfIn PDF document text
    • https://cdn.sqhk.co/mafowixodi/j9xkida/panda_bubble_shooter_mod_apk.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/artificial_intelligence_with_python_tutorial.pdfIn PDF document text
    • https://cdn.sqhk.co/vomikigiw/ScPGhi9/happy_birthday_hockey_player_gif.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/woberiz/zowub.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/national_portrait_gallery_washington_dc_hours_of_operation.pdfIn PDF document text
    • http://doriponesarom.myartsonline.com/what_clippers_do_professional_dog_groomers_use.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_off0000ecd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD3 4732 bytes
SHA-256: fb42ba6357cee37c7d9ac10e7e6746c22a07a994aca42b65ed0e97c585bb7be2
font_01_sfnt_off0000fcd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD9 10568 bytes
SHA-256: 8f1accfcd088429977180b63d3e21c022179774b7fdc2be3a7c9a95b94f1e9a1
font_02_sfnt_off000120f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120F3 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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