Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba0571c9c059cf96…

MALICIOUS

PDF

103.3 KB Created: 2021-03-26 05:41:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: f5cc55f800480f361af3b47e2b9b62a7 SHA-1: 02c015b9f7498ba97c6584bbaf5b46366b479cae SHA-256: ba0571c9c059cf962969736f66b3b186befcebbc6e1cc54112afe62d1b4a8cb3
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a 'generator manual', aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=dayton+3w954+generator+manual PDF link annotation
    • https://cdn.sqhk.co/josurowelimu/jjih4hi/72347961099.pdfIn PDF document text
    • https://cdn.sqhk.co/nolovojawek/1jfjdHj/mokemikirobusos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405903/normal_600afdce37157.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450731/normal_601e5e4b52945.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456666/normal_60537e6354d57.pdfIn PDF document text
    • https://cdn.sqhk.co/mewuxedodi/ji7hhZF/insideout_coaching_grow_model.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460690/normal_60275b48e2866.pdfIn PDF document text
    • https://cdn.sqhk.co/leruwexikud/L6yXieN/dibivejagizezireregoj.pdfIn PDF document text
    • http://rafonuza.22web.org/elite_dangerous_engineers_fsd_upgrade_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382614/normal_6033478dddc7d.pdfIn PDF document text
    • https://cdn.sqhk.co/kubizevomedi/dd56Phb/32127489479.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370288/normal_5fd2d05f17009.pdfIn PDF document text
    • https://cdn.sqhk.co/rejiwosujupa/nasiGeD/decimal_place_value_practice_13-_7_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/ghdBUjf/kalep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xaramoturowuf.rf.gd/rig_veda_upakarma_procedure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feeba8e4-9916-4ff3-87e9-3c912044365c/what_are_the_five_principles_of_social_justice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87e12575-a2c5-4838-b9f3-cfcba60a4d4c/susinutoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59e4dac2-3b68-4796-9002-ae4a80dcadc1/37316265330.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6149f10b-6328-40a2-8311-358eb9d83225/reading_comprehension_books_for_2nd_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/712b2b86-f62b-44ec-96af-057e0398c71d/pozedosafujegexekanaxugeg.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_off000156c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156C4 5552 bytes
SHA-256: 107510333132d4e3a9ce6423f48bf42815fcec315bd7f5adb3ea2ed31ddf3a34
font_01_sfnt_off000169bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169BD 11212 bytes
SHA-256: 80cd15b7f189cef623fe5b5f2bcf6fd61d66375a2669996f676ec2464d98976b

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