Malicious PDF — malware analysis report

Static analysis result for SHA-256 b35944238a3e3726…

MALICIOUS

PDF

76.6 KB Created: 2021-05-15 19:43:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: de5ecae91d5033973fe08f8e4595217c SHA-1: 51af237e9c5407ebc3d76efa067d357c8d94bf0f SHA-256: b35944238a3e3726b6d64dd88e949985d0a5f7b1a4f8618b8b35bdea6f9da59a
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 0.9997

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://midufefew.ru/strik?utm_term=how+to+whitewash+furniture+with+chalk+paint PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393755/normal_5fc5a156df7a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402486/normal_6051124bb5a98.pdfIn PDF document text
    • https://cdn.sqhk.co/tamoravuwera/hj1ud9n/28148383733.pdfIn PDF document text
    • https://cdn.sqhk.co/rogenujudita/ihii3UC/xewovopalok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417408/normal_6047f97c83d30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461744/normal_5ff7c2ba46851.pdfIn PDF document text
    • https://cdn.sqhk.co/miwavilusaji/2iijib1/pabizirela.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454694/normal_5fd10dc181585.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404297/normal_606cc18752ada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369191/normal_6066846b41ffc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476941/normal_60667be81f8aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455645/normal_604fdded66b98.pdfIn PDF document text
    • https://cdn.sqhk.co/nesadatifu/W6jcKhf/facebook_lite_facebook_app_download.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/jokotaziweluge/49490333791.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/hp_designjet_500_ink_cartridge.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/nobeditisarobuxun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/810e910e-5a5e-4644-86f6-0f90dbbeae74/lucent_english_grammar_book_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6964bb90-2834-4ecd-84ea-68354d18d865/lojajodizenidupele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc3e2ff4-ae58-4d2b-b450-8af10f092526/orar_en_el_espritu_santo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09de431f-28ae-4791-99bb-7f827a80fcd9/how_to_use_pmp_certification.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/android_9._1_free.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_off0000ee92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE92 5220 bytes
SHA-256: 3c45e2d2ea673cdf0cfa4bb0e371577f39f034f1d2e76cec426110866e401470
font_01_sfnt_off00010062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10062 10696 bytes
SHA-256: 3129f9c7685628cbb1a14da1766c7489f4c66fbb8058f26af4880ba8dea0c532

Open this report in the interactive analyzer, or submit your own file for analysis.