Malicious PDF — malware analysis report

Static analysis result for SHA-256 f13f77d2b8919837…

MALICIOUS

PDF

77.1 KB Created: 2020-12-19 09:47:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b5125e79801e15046e4291a4a362a239 SHA-1: 9d6984cb60a461d60bf686a54389b3a82f4e14ed SHA-256: f13f77d2b8919837e53d3f1500a955d238a2743a214cbaa1de785dc198082158
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 0.9998

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://trafftec.ru/123?utm_term=unblocked+age+of+war+3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383327/normal_5fdb3c5293dd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366385/normal_5f941e7348de7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5b27eb7-eb87-4823-b2f8-e7d84325203a/american_practical_navigator_volume_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5d1354b-b31d-41ab-8f0c-e08ac1c6072d/45499076679.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ef6d228-c7ac-432a-8512-9b5f51404066/riviguzamepadunegivofo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a902f50-463a-446c-aee4-d3956b8789e7/76759914752.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64cfe12facd59ced1d628/t/5fcd3b8efe657040d59d8dc4/1607285646181/bothell_pd_blotter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f20c3ac-fbc3-4c1f-8dac-ab8678f44821/the_substitute_denise_grover_swank_read_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66069392-369c-424b-b538-f3ec4ecc4468/four_year_anniversary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d6cee34-2bb7-4378-b350-f2d3d746d82c/11724063058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ca23fe5-2674-49af-8cbd-73cc2fa5f183/ganakiwofafiwow.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ea1fa8793968640865e0/t/5fc332c261e25426e1a01ad8/1606628035448/i_can_do_anything_i_set_my_mind_to.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc29e0dc30a162e0c5d7436/t/5fc3f40d145a8629dc2aba28/1606677518889/rifizidalova.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_off0000f19d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19D 5460 bytes
SHA-256: e95c66f4692ae406c5ee92656b29abaf99bee81ba2db2006f755f5297d6375a1
font_01_sfnt_off0001045d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1045D 10268 bytes
SHA-256: 66c87baa625c3923f0238f1628f00fcd4ead8da2956635959b1a9573e3bd5638

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