Malicious PDF — malware analysis report

Static analysis result for SHA-256 3208e9ea28177e41…

MALICIOUS

PDF

92.5 KB Created: 2021-03-28 09:32:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4f4d554979a4e53df200bc8f561319a7 SHA-1: c2c8e811f00879e108efffe04ffd23605989ed1a SHA-256: 3208e9ea28177e410fc5608820d0562b9c2982da870e1c95ba71166d1db7d001
144 Risk Score

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. It uses a password-protected-archive lure. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://druttle.ru/wix?keyword=hellstern+middle+school+phone+number PDF link annotation
    • http://gordei2d.com/3474051695889q7w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5feaeb46d598c.pdfIn PDF document text
    • http://dragonflysagewellness.com/83578365882ewsy5.pdfIn PDF document text
    • http://keepmaxi.space/animaciones_y_transiciones_en_powerr76ku.pdfIn PDF document text
    • http://b4shop.icu/gogesenatemuxidudifdjjhv.pdfIn PDF document text
    • http://usene.xyz/their_eyes_were_watching_god_pageseysi3.pdfIn PDF document text
    • http://nuveclovet.xyz/toyota_echo_stereo_wiring_diagrambkw5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406166/normal_603edc89ad248.pdfIn PDF document text
    • http://ukranews.icu/why_does_my_night_owl_dvr_keep_rebooting8zv4d.pdfIn PDF document text
    • http://snegny.com/12228385397n696d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378155/normal_604892d7a90ab.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/zakunafu/independent_contractor_agreement_template_australia_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/92593785795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3874d7a-04d0-45ec-ae8c-c28570effdd3/how_to_measure_dunkin_donuts_coffee.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/holly_leaf_outline_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1c71917-8ad3-46a2-9e8d-68b7d94365e8/xukimuxofaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3318d9ae-7462-4b34-9850-246ac112ee83/how_to_apply_for_step_1_usmle.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/tft_league_of_legends_item_cheat_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f2fdcb5-0933-4673-8f35-66e9e14b1860/53207936594.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_off00012c08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C08 5204 bytes
SHA-256: b863da2f161ab1595e101297422748ecc877d9377b4b8842cd2e85c670786364
font_01_sfnt_off00013d87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D87 11916 bytes
SHA-256: 368df9fa4b6eb42ad58154f39621012e30a710391ac71574c4d77c2a72dc8f6f