Malicious PDF — malware analysis report

Static analysis result for SHA-256 03aa6618ec57c2e5…

MALICIOUS

PDF

85.2 KB Created: 2021-07-24 11:32:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: dff568531f5cf14ce5ceda6583329acb SHA-1: 58d9bc2b939eeb38e493e3986d66f91c83b1f316 SHA-256: 03aa6618ec57c2e5659c279e4131c12c05cb3f673623118177be05ef82f8e958
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on compromised or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. The embedded JavaScript is likely used to facilitate the redirection or obfuscate the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://alohasafaris.com/files/79713267464.pdf In PDF document text
    • http://chamdure.com/DATA/files/bipolujibuxem.pdfIn PDF document text
    • https://tecnibat.net/uploads/archivos/mibodusom.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160728827f16c4---jatujaxu.pdfIn PDF document text
    • https://sheenabusesandcoaches.com/userfiles/file/91508207888.pdfIn PDF document text
    • https://artbynela.com/uploads/file/54778478933.pdfIn PDF document text
    • https://kaptenhoki.info/contents//files/tajegagizakiketidona.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609069e6b57eb---mikawur.pdfIn PDF document text
    • https://sandzak.best/wp-content/plugins/super-forms/uploads/php/files/12b62f20bb60239ffb4ae8e56f0f4bc3/wumomazuwotevuwawunodemag.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160bf4e387e7e3---21837049719.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6b7e8234d---lolopabekavekivuzapuse.pdfIn PDF document text
    • https://edbcagliari.it/file/gevimadebodixudufuxidogos.pdfIn PDF document text
    • http://interiorconsignments.com/media/file/jizirodafoxujotuwu.pdfIn PDF document text
    • http://mazdooradda.com/userfiles/file/takazodotar.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/4lbolhrg2updq9otr08l27blhe/wuwezotepagokezotone.pdfIn PDF document text
    • http://plovdivweek.com/app/templates/js/ckfinder/userfiles/files/33228005175.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/2dacd138d3921a75f4aa22d7605fe8e5/53405651307.pdfIn PDF document text
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acb5274f6e1---17007367831.pdfIn PDF document text
    • http://music-summer-courses.eu/upload/files/tejegevorisetitedum.pdfIn PDF document text
    • http://aceonlinementors.com/userfiles/file/34119212990.pdfIn PDF document text
    • http://100gastro.cz/soubory/files/21437291155.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606da6de5ae7b---bijujojupozepabubire.pdfIn PDF document text
    • http://colegiosantarosa.com/uploads/imagem/file/dazanimivikuruvakisedix.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=what+is+the+objective+of+balance+sheetPDF 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_off0000eb48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB48 10660 bytes
SHA-256: 841afc880211e01474ba9d7f0f7b3d35b145e131164878e58a8a6825369b77c8
font_01_sfnt_off000103a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103A6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011bb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB8 16376 bytes
SHA-256: 3223baafdd45371b3fa2d04f6f666d4924e8553f884c4c160a1aafa850a291a9

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