Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda89c229bea5768…

MALICIOUS

PDF

86.5 KB Created: 2021-05-19 06:36:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0bc47ac4a6d1440ff2ca935201ede2c7 SHA-1: f4323695c7b7d43cffe1946dab9f70c7bbeff89d SHA-256: fda89c229bea576865fabee86f63dd1f247330eff3ef83c9525a1fd58c927c6f
104 Risk Score

Malware Insights

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

The file is a PDF document that contains a link to download cracked software, indicated by the URL and the heuristic 'SE_DOWNLOAD_BUTTON'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of external URIs and the overall context point to a phishing attack aiming to trick users into downloading potentially malicious software.

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://seumenha.ru/strik?utm_term=autodesk+autocad+2009+crack+keygen+download PDF link annotation
    • http://toxedixekerej.22web.org/back_exercises_arc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478125/normal_5fcd5f79d6f59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493553/normal_5fce9651d8ee2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426966/normal_5fd9badbc2a15.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tobaziw/bubugofov.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/cv_templates_for_fresh_graduates.pdfIn PDF document text
    • http://tebuwujovu.rf.gd/47845528677.pdfIn PDF document text
    • http://sagulisopopu.epizy.com/10th_cbse_english_book_download.pdfIn PDF document text
    • http://kuxiguzemafuj.rf.gd/the_bet_david_show_tax_plans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/995b0b03-0419-4b0c-a187-077724a1c06f/kubupodelizifu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b212c433-6672-4295-a6bc-8504f65483b9/995835392.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/chrome_activate_flash_2021.pdfIn PDF document text
    • http://wupafar.rf.gd/92534832150.pdfIn PDF document text
    • http://vomitad.epizy.com/74957213061.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/836d87e5-33e8-4d13-8a14-6aa412f87ce1/vubesegijivamabazu.pdfIn PDF document text
    • http://jozadedosirokeb.rf.gd/80046138423.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/criminal_appeal_lawyers_houston_tx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f01fbc44-e84a-4924-b118-6291dd958389/xerox_workcentre_7845_parts_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/gw2_light_armor_crafting_guide.pdfIn PDF document text
    • http://gozamud.rf.gd/educating_esme.pdfIn PDF document text
    • http://kokibitumoxa.epizy.com/puzzle_alarm_clock_app.pdfIn PDF document text
    • http://wigewedarigal.rf.gd/how_to_write_book_report.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DCE 5784 bytes
SHA-256: 1b8659fc4e36af6fa04a04be34f08c2a6ae9a8775ff2ab84a2e8ea84b3e12469
font_01_sfnt_off000121a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121A7 12152 bytes
SHA-256: 1e45879ab4dff11ff4990d898e7417f646beec724345d45379c29774c782a67b

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