Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb70b0ab7c7d73de…

MALICIOUS

PDF

110.9 KB Created: 2021-08-13 04:10:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: e101f0581837df320778670ca9dc0f70 SHA-1: e7cceb0543a3228cbd79d8086deb11e6910981dd SHA-256: fb70b0ab7c7d73defd10e4dd8e4d4e71e926f29528b8ca5e81735b68292dca88
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of heuristics like 'SE_ENABLE_LURE' and 'SE_DOWNLOAD_BUTTON' suggests the document is designed to trick users into enabling content or clicking a download link. The numerous embedded URLs, many pointing to compromised CMS uploads, further support the attack pattern of luring users to download malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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 http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bbc371d8314---35654795011.pdf In PDF document text
    • http://hanhthien.net/uploads/file/49914472493.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/qf8l64bkcregeiegl9ds9ajh66/32046341581.pdfIn PDF document text
    • http://staples1981.com/clients/b/ba/ba027a536d51c1d997ee76cae6dc9017/File/kigefaf.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/a40832b08fa3f3442098de1e88f6e75f/56891249423.pdfIn PDF document text
    • http://ccswcd.com/userfiles/file/falug.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/a853197f2bf67c9cd2daa022977f5743/tademav.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ab7154ba50b---xubudijoreluxexevosuxu.pdfIn PDF document text
    • https://sharmtocairo.com/userfiles/files/wasizebimelukulamidanu.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/381a1a0424981f0b482d31b3c473cd3d/17719389250.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0d30c3d3fb---23769862508.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609845246409b---mibovozuxoko.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/bi8m935ttpnqp86ale95r907i0/67572873510.pdfIn PDF document text
    • http://nfrostov.ru/upload/files/wotubatezamepali.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/4789f7695238480ae4341786791f7f64/40031674326.pdfIn PDF document text
    • http://clinicaveterinariasangiacomo.it/userfiles/files/madosinerokewovugowilar.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609af358d10b9---salanosunegawu.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/gilusofasinagovojagogiwel.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/gutixopomoputowikufe.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b5b5743896f---zilotuladot.pdfIn PDF document text
    • https://limpiezasinasel.com/userfiles/files/xudewulevovavugagulus.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+maintain+bank+reconciliation+statement+in+excelPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14962 18688 bytes
SHA-256: aea07fac4d170ab2a14606d5337ad5afd938cfddb7508277176384c32747dd30
font_01_sfnt_off00017b10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B10 10804 bytes
SHA-256: 6fe67405012bbf43edb1577a471c7cd89029c0249289e62456a4ccfe08de4a0d
font_02_sfnt_off000193fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x193FC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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