Malicious PDF — malware analysis report

Static analysis result for SHA-256 e14ef193404665a1…

MALICIOUS

PDF

85.3 KB Created: 2021-08-20 17:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 516f074f1c9d4c4f6524f9057fcc525b SHA-1: 1a9655254a78b4b9e18ff5d1bec81d9ef5e36cdc SHA-256: e14ef193404665a1ca2aacb912022227e4109f4441b58287e867e68b5caea8e8
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a phishing or malware distribution attempt. The embedded JavaScript likely serves to execute malicious code or redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://pistant.ru/uplcv?utm_term=you+don%27t+mess+with+zohan+full+movie+in+hindi+watch+online PDF link annotation
    • https://oncetrabzon.com/resimler/files/37555170991.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16107fd3804eea---suropofobaraxa.pdfIn PDF document text
    • http://lpkgoodframeupvc.com/userfiles/files/57625269444.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd3bc30a41a---58701089246.pdfIn PDF document text
    • https://daotaolaixesontay.com/uploads/file/vakovulesisirunabodaw.pdfIn PDF document text
    • https://cornerstonelaw.eu/userfiles//file/xifemujugebozofejeto.pdfIn PDF document text
    • http://erictex.com/ufiles/files/36158768841.pdfIn PDF document text
    • http://brandiassociati.it/userfiles/file/lozazewobenazuxejesavu.pdfIn PDF document text
    • http://aldo-ins.com/userfiles/file/61885149993.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609c7355b7c8f---tosefiz.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d9c0b2bb01a---rigediralofosav.pdfIn PDF document text
    • http://chronocertif.com/userfiles/file/dovumakizedodeluv.pdfIn PDF document text
    • http://stonebreaker.at/91624592214.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a54f788e487---zajorebifukavejejojizi.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/160834db32107d---xaxajigixitepixuzet.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/81412797174.pdfIn PDF document text
    • http://feriaalainversa.com/uploaded/files/suvitesivudavokosesazugo.pdfIn PDF document text
    • http://volvo-cars.jp/js/upload/files/77154207533.pdfIn PDF document text
    • http://abwmountvernon.com/uploads/files/lokibukubugujipetifufu.pdfIn PDF document text
    • https://ewdel.cz/ckfinder/userfiles/files/61046303168.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/80a394b7db421ee66e5b5b99824b08ac/furufiribudevewawuzomo.pdfIn PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1606dcdd6301ea---jutozimunipiraremevur.pdfIn PDF document text
    • http://miwon.com.vn/app/webroot/uploads/files/9778099203.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160915f63bf790---97115185169.pdfIn PDF document text
    • http://sun-dr.com/uploads//files/202108081838414260.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607ccbbe5208d---21139279934.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://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_off0000e82d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82D 17160 bytes
SHA-256: a7321800dd85c94badf07cab4279bf864c5c2c2af9a344c55940838d5c983fda
font_01_sfnt_off00011518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11518 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D2F 10968 bytes
SHA-256: ff1b766b1aaf32857139ed540b8cf83856c6ed3ecb0422c631ce150dc603944f

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