Malicious PDF — malware analysis report

Static analysis result for SHA-256 d65ca10a0a9e0de7…

MALICIOUS

PDF

105.3 KB Created: 2021-04-27 19:18:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d04afb30694e8c954108e0733a0aef24 SHA-1: a65b895baace7023d9d0c1b9feefce53cb1758b8 SHA-256: d65ca10a0a9e0de70aa6ec1911718f57b9eafe2bd9d807f7cc1865a18f6c1e9b
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.001 PowerShell

The PDF contains multiple lures designed to trick the user into executing malicious content. It presents a visual download button and prompts the user to copy/paste content into a shell, indicating an attempt to bypass security measures and execute a payload. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/strik?utm_term=best+free+final+cut+pro+tutorials PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378831/normal_5fdb1076a0c41.pdfIn PDF document text
    • http://wilitubejibo.iblogger.org/gravely_ztx_owners_manual.pdfIn PDF document text
    • http://rabemedexisubis.mygamesonline.org/bajozatomajijonixamuvi.pdfIn PDF document text
    • https://cdn.sqhk.co/mitukutowum/E3whiKT/rock_music_ringtone_mp3_download.pdfIn PDF document text
    • http://loneresel.mygamesonline.org/kofoxejepasopud.pdfIn PDF document text
    • https://cdn.sqhk.co/ramawuvade/gywijtT/48408654578.pdfIn PDF document text
    • https://cdn.sqhk.co/mirusopujame/bghibOp/mepowokitifamiwidudaxap.pdfIn PDF document text
    • http://rezanufeku.mygamesonline.org/grade_7_maths_ncert_book.pdfIn PDF document text
    • https://cdn.sqhk.co/riragimi/ijjijiF/flip_and_roll_omelette.pdfIn PDF document text
    • http://pawomodom.medianewsonline.com/rananisumukapawede.pdfIn PDF document text
    • http://lezeninimi.medianewsonline.com/maytag_quiet_series_100_dishwasher_racks.pdfIn PDF document text
    • http://pofizivor.22web.org/what_is_better_blast_protection_or_projectile_protection.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407562/normal_5ff455531d709.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457279/normal_601aae5b86211.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizilo/8hjggto/kefotura.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dajodenojekox.epizy.com/pukaxoke.pdfIn PDF document text
    • https://9db8f275-5044-409a-aa1b-3306d9dda9bd.filesusr.com/ugd/361f4b_bfe59376f6b64a7c9e0cfec62a97efcf.pdf?index=trueIn PDF document text
    • https://a62e46b8-d933-4087-892c-e5439cec6991.filesusr.com/ugd/e9cba9_c2b6bc48230e4a3386398ce7b28fef7b.pdf?index=trueIn PDF document text
    • http://xogomegutu.epizy.com/body_language_book_malayalam.pdfIn PDF document text
    • http://fetevatakipip.epizy.com/psychology_mental_disorders.pdfIn PDF document text
    • http://zagebixomibolo.rf.gd/56814253009.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_off00016044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16044 5056 bytes
SHA-256: e71b37d4a45c4bda6f390ac7c38647eb4451d8e8e79828367d75dbebef3fd10f
font_01_sfnt_off0001718a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1718A 11268 bytes
SHA-256: 1dd061a816fcce0b332a290f5fbc59e103864d1879119613fbcd26fe18a23ff7

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