Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e294e6d973889d…

MALICIOUS

PDF

70.1 KB Created: 2021-09-25 07:37:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 76809bdb559573da62e22d676d9c1082 SHA-1: aecf9bfbcaf023c8be70806516b18d5a574f3f01 SHA-256: d1e294e6d973889d419c9b394ab9169f98d7f33f21b19b1b3266b80ffe97a28c
164 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. It also features a link farm pointing to compromised WordPress uploads and disposable hosting, strongly suggesting an attempt to lure users to malicious sites. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or malware delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9837

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 http://pneusmarene.it/images/file/99671200890.pdf In PDF document text
    • https://tecnicadovolante.com/images/file/vasozamiziris.pdfIn PDF document text
    • http://studioriboldi.eu/userfiles/files/putesumamemitodarosadi.pdfIn PDF document text
    • https://100tmt.com/uploadimage/files/20210923054949.pdfIn PDF document text
    • https://hohsingfiber.com/ufiles/files/pevijelokolibopatufopen.pdfIn PDF document text
    • https://rapn.ru/ckfinder/userfiles/files/3173289952.pdfIn PDF document text
    • http://groupementpecheduloir.com/ckfinder/userfiles/files/nixemavinawe.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613be6a0875e5---24211042161.pdfIn PDF document text
    • http://szakkepzosiklos.hu/upload/file/39874405425.pdfIn PDF document text
    • http://tomei4x4.jp/js/upload/files/96480506166.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/79670396387.pdfIn PDF document text
    • http://jiji.pgo.tw/pic/uploads/files/80814198767.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/91241748391.pdfIn PDF document text
    • https://polresseluma.com/assets/ckfinder/core/connector/php/uploads/files/44006034843.pdfIn PDF document text
    • https://dialogueinpraxis.net/files/docs/bofagodutosijonavutakov.pdfIn PDF document text
    • https://niagarablock.com/application/webroot/userfiles/file/2409468027.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cd34f833cc---silogenizim.pdfIn PDF document text
    • http://fatamorgana.fr/uploads/assets/file/vagafetiraf.pdfIn PDF document text
    • http://progettogeometra.it/userfiles/files/vafusi.pdfIn PDF document text
    • https://penzion-pod-rozhlednou.cz/img/file/zapozegap.pdfIn PDF document text
    • http://world-green-hope.com/uploads/files/22127791637.pdfIn PDF document text
    • http://biirbeh.mn/images/content/file/pifubesuzupe.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612eadda16983---57024001897.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/k7jtrldrvtgidvm5lvq00r86hr/38130574882.pdfIn PDF document text
    • http://come2menorca.com/images/file/wodadugamelodumedosupoda.pdfIn PDF document text
    • http://cermak-expo.cz/data/files/file/dedon.pdfIn PDF document text
    • https://qatarsecurityservices.com/public_html/userfiles/file/68137913452.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=grab+the+beast+app+for+androidPDF 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_off0000b1cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1CD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c9e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E4 10728 bytes
SHA-256: d06dc94857959aa5f5b84c2222e53123445021dc9376fc2ab550db4fb2abfc45
font_02_sfnt_off0000e243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE243 15888 bytes
SHA-256: 29224a132814a0728d3e910394cf6bca6fbfccb92bab23931361db917116c16e

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