Malicious PDF — malware analysis report

Static analysis result for SHA-256 b19faebae0e3062c…

MALICIOUS

PDF

125.0 KB Created: 2021-08-15 20:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: f07fa8ee1564088ecc1b9c5d3ec58e87 SHA-1: e5741d53b7995ec085246f54d77f9f5229188d4b SHA-256: b19faebae0e3062ce18ef9eda0615d0a21c5d232712f3aecaf6ea45741c595d7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document functions as a link farm, directing users to multiple external websites, some of which are hosted on compromised CMS uploads. The primary purpose appears to be directing users to potentially malicious or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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
  • 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.
  • 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://etadelloro.it/images/file/makivadopematibugilanevu.pdf In PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160934189c1e00---balejusogegaluri.pdfIn PDF document text
    • https://nnt52.ru/userfiles/file/neroxikududozekaza.pdfIn PDF document text
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/d0004d93f3a9f61c0ae973107ff53bdd/31236079249.pdfIn PDF document text
    • https://wedding-photos.cz/userfiles/file/wiwapukovimo.pdfIn PDF document text
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/fc110e668f194b22950630210b4c3ce4/50839978210.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160853939e131b---pugiz.pdfIn PDF document text
    • http://bukharasuwanee.com/sites/default/files/file/32626834943.pdfIn PDF document text
    • http://domeinbeverdonk.be/assets/files/file/92907738712.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4c9b049d4f---vebesuxujewivedo.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160d3062b14ee2---lokidezasefapike.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/29juacb6mt4gdls3ulmflnm662/40178927049.pdfIn PDF document text
    • https://chetanaus.org/bheru/uploadfiles/file/xejenitufejemofuwedixeko.pdfIn PDF document text
    • http://yossy.biz/userfiles/file/vonurubatewareto.pdfIn PDF document text
    • http://csc-0411.com/userfiles/file/20210810214502_8v5yxp.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160890516a6c27---libeval.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a47cdec1d75---70468280766.pdfIn PDF document text
    • https://coonvalleycc.com/userfiles/file/zalenakepuluvezu.pdfIn PDF document text
    • http://pecsimutargygaleria.hu/files/file/95808780463.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/72db189a93ebc16b6763c65ef507303a/wevareropaxananixenot.pdfIn PDF document text
    • http://fongyoskert.hu/userfiles/files/barozovuw.pdfIn PDF document text
    • http://change4best.ru/upload/file/26186018306.pdfIn PDF document text
    • https://nirmalujjwal.com/public/ckfinder/userfiles/files/vazuzisavobenezifavofeki.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+can+i+transfer+my+voter+id+card+from+one+constituency+to+another+onlinePDF 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_off0001871a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1871A 11096 bytes
SHA-256: 4cb525a5feef6c53c372ed41fccc8eb8fc306fafdc6c9874f5b47ec4372b6b1d
font_01_sfnt_off0001a0d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A0D9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001b8eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B8EB 16732 bytes
SHA-256: 91f19eb3cf4683f08abcb4176f5ba2f5dbbbc2d6551cd664e7dc66e49ffd676a

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