Malicious PDF — malware analysis report

Static analysis result for SHA-256 b14cddf3063ca90c…

MALICIOUS

PDF

94.1 KB Created: 2021-05-24 19:07:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: fed94a8ee42f844e7301d9d3e56b21f2 SHA-1: e3b54c20a884ac0d23345a04a1e81d6896b3c794 SHA-256: b14cddf3063ca90ccf33cb6718f584f460c75d4d96f68f8bb93e5d5812cade47
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a suspicious domain. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, contains text related to writing Nepali script, likely serving as a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://botokaw.ru/strik?utm_term=how+to+write+ka+kha+ga+in+nepali PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4378164/normal_5ff9fc6b3caf2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377697/normal_5fc659bb93bd6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/certificated_security_in_bearer_form.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/pukavokutenuzewaxulexo.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/68108103120.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/video_klip_arms_around_you.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/39924156837.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/90215722490.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/puwedekekulo.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/hp_laserjet_p3015_printer_fuser_assembly.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/gorovemuvefojopexofutekak.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/rupinder_gandhi_hd_pic.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/79895558887.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/vubajizitimuwapes.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/salmon_fishing_report_bodega_bay.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/abscisse_curviligne_formule.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/pubabalakadedagoli.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/84568735452.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/74991245390.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/tp-link_tl-wr700n_repeater_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/gatefold_easel_card_template.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00014691.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x14691 17216 bytes
SHA-256: b1267f1391be6bdef9118789545798e7638e3ef208f5090fc5709d6b4ad07eff
font_00_sfnt_off000109c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109C1 5020 bytes
SHA-256: af06d4d32b64278edcec09eb43dd8b6ea6dfbb9bc88a407d91c13406b6f22841
font_01_sfnt_off00011ae6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AE6 13116 bytes
SHA-256: 4d9b37aaba5fe3039aae67c82c40481c220f1a4e9f9c4d84c1f028d51a3b3166
font_03_sfnt_off00015ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FFC 2512 bytes
SHA-256: f6c7844cd1824f064e6270eaa0e3559ece3e4eeae01f11ff3435f939518433f2

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