Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d99a919a6de7aa6…

MALICIOUS

PDF

191.0 KB Created: 2021-05-31 17:53:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: db5335903c35679efc6289d35ab3d765 SHA-1: 18789b45460bf33ebee4c9ac16e7a6ac7b136e97 SHA-256: 5d99a919a6de7aa6d9bd321e0d05b648b0496bf4c04ad602dcfc416c8fd587ac
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 0.9986

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://seumenha.ru/123?utm_term=allu+arjun+new+song+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445742/normal_6012fc93ad405.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381291/normal_602c7a1195fb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486363/normal_604141873b0ed.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4381083/normal_60b1dd389bc4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411218/normal_6017fc56c4d78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369768/normal_5fc9b6c3f22e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368958/normal_604ad06c2f3c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_60348bf0c2c85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427498/normal_5fdd82f8de625.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
    • http://viluxese.pbworks.com/w/file/fetch/144415128/how_to_run_originality_report_in_google_classroom_as_a_teacher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07f6a303-36df-44a6-926e-007ade73dd76/quantum_physics_basic_principles.pdfIn PDF document text
    • http://kufujibumufa.pbworks.com/w/file/fetch/144411645/how_to_connect_vizio_wireless_sound_bar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17d9b867-466f-4967-9288-ce015d7f1fab/womupututimek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/756eb7e3-dbf7-45ee-adc6-24f6a3d98b42/pabipuzuleradexo.pdfIn PDF document text
    • http://nilanom.pbworks.com/f/how_to_cancel_brinks_security.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5399aff7-6524-44dc-b890-1ab010898a0f/fugaravisupixubiverezifiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fba40c8-5c95-482e-b977-9472e1a0e047/where_is_the_water_filter_located_in_my_samsung_refrigerator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f06928c5-ed8b-4d1a-865c-66560dd19fce/why_wont_my_ps3_controller_work_wirelessly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fe4f2c0-fe5f-4662-b9a9-b0727b32906d/how_do_i_set_my_nixon_watch.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_off00026ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26BA3 5492 bytes
SHA-256: ed3088b6caa47b3570075495b5261c004c065bb3debc0eae3a0c955833e60555
font_01_sfnt_off00027e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27E74 19776 bytes
SHA-256: cf3e1e11f4964ff9d992087e4853ae1428d8b9d8142e3f8b4025b187a05f1954
font_02_sfnt_off0002ad0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD0A 12828 bytes
SHA-256: ccf12908dddf9a84818db9c8fa4bb5accbe002fe24e914f7ec2dcab9a7eb6324
font_03_sfnt_off0002d7f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D7F4 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3

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