Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fdd1db49f257db4…

MALICIOUS

PDF

112.0 KB Created: 2021-05-14 17:52:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3b4fc4a41f027c6ee1f80e34a793db5b SHA-1: c334bf5c6d6499dc22ae9b7ac169c9cb14cf2a3f SHA-256: 1fdd1db49f257db4f62ea4a022988bd7d70879bdf1d19de7133ab49344824fc1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dugedepap.ru/strik?utm_term=pelicula+mexicana+el+rey+del+tomate+con+piporro PDF link annotation
    • https://jifujutikawe.weebly.com/uploads/1/3/5/3/135328504/munidugijanom-loxepanaxiwo-wurodu-zuziben.pdfIn PDF document text
    • https://lezojefob.weebly.com/uploads/1/3/5/3/135319065/6842272.pdfIn PDF document text
    • https://ferizovewop.weebly.com/uploads/1/3/4/8/134887996/pebuxen-zokenenunozo-lojodabekuwop-karanefukufozaw.pdfIn PDF document text
    • http://nuzabokazovuwa.iblogger.org/buvinolujefimopali.pdfIn PDF document text
    • http://sinelejijona.22web.org/75665177945.pdfIn PDF document text
    • http://zujirekirel.22web.org/witun.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/memexelu/how_much_horsepower_does_a_jeep_cherokee_srt8_have.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45b4ddad-2fab-4545-bad1-c3d5b63982b8/venexijebij.pdfIn PDF document text
    • http://sidovarodefomi.rf.gd/angry_birds_epic_pc_game_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/questions_about_martin_luther_king_jr_letter_from_birmingham_jail.pdfIn PDF document text
    • http://labosixu.rf.gd/woxuzejugazorolawogufalow.pdfIn PDF document text
    • https://d7ae471b-a447-437d-81b4-4e603f8679d9.filesusr.com/ugd/0a3240_4490a4d28608410bb78f4be471f29ab7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/woxorojero/bitbucket_single_file.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/161ab9aa-2cf7-4c7b-9dbe-69ff3b5526f7/69262264351.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ef0166f-3165-420f-9496-87135a8eaadf/mixupasifenovuvo.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/bcbs_of_north_carolina_refund_form.pdfIn PDF document text
    • http://xevorerokune.epizy.com/vezeg.pdfIn PDF document text
    • https://4c69d07c-928c-405f-a1ab-6436392658c4.filesusr.com/ugd/4c264d_97472ef2be6c40c3888a3bd446bc6e97.pdf?index=trueIn PDF document text
    • https://80172413-d145-4b71-b7cf-4a007d76ad29.filesusr.com/ugd/cacfd7_ee205ececee54cd081d4be356f142b4b.pdf?index=trueIn PDF document text
    • http://vibejasejejake.epizy.com/2290288507.pdfIn PDF document text
    • http://konoxebajokebu.rf.gd/36990446473.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15365 5096 bytes
SHA-256: 9655cf9210421e79877c3767310b5c4f6bc543bcebddbb56fc8ab01011f39195
font_01_sfnt_off0001649f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1649F 12548 bytes
SHA-256: b763b8cd01e74904d7b4ba2dd1c3f39adbdd95e1dfcbc89cf8b9be323e03ffa6
font_02_sfnt_off00018cc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18CC0 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15
font_03_sfnt_off0001a1ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A1EE 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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