Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e7ce90ee5d4378f…

MALICIOUS

PDF

79.3 KB Created: 2021-10-09 02:12:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 0b2cd9c060f6ebc0cb40ba3d07ccfba9 SHA-1: 5bfbbbaa014dbce1ed8ad29c874ac34fb40af7b6 SHA-256: 9e7ce90ee5d4378f76fb07365c1d60e9a479aa1b6e6c59771209be799d27d153
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code within documents. The presence of multiple URLs, including those hosted on compromised WordPress sites and other disposable domains, indicates a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://truckforceone.com/upload/editor/file/nodokadulepebuzebekuxab.pdf In PDF document text
    • http://lohoithaiduong.com/uploads/files/33343487883.pdfIn PDF document text
    • https://appchecar.com/ckfinder/userfiles/files/19922673816.pdfIn PDF document text
    • http://bancasemecanino.com/userfiles/files/88972309988.pdfIn PDF document text
    • http://tagsu.com/attachments/fckattachments/file/70633496530.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/943f9a5cb9702c609b0d678faf6f5e18/bapujaxoxesawotalokidej.pdfIn PDF document text
    • http://studio-castiglioni.com/userfiles/files/83887502655.pdfIn PDF document text
    • http://agenziaimmobiliarecannavo.eu/userfiles/files/lirufususonaj.pdfIn PDF document text
    • http://ajisushionline.com/uploads/files/nabojojofama.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1615632ec14998---82588826457.pdfIn PDF document text
    • http://hauptlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/16019246585.pdfIn PDF document text
    • http://circuitvietnamcambodge.com/hinhanh/file/wufatifivapat.pdfIn PDF document text
    • https://hatinhjobs.com/upload/files/12016959894.pdfIn PDF document text
    • http://ccadl.com/files/20210903204511.pdfIn PDF document text
    • http://esipro.fr/userfiles/file/tosepemojiv.pdfIn PDF document text
    • https://juraganmonyet.com/contents/files/52134069525.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161532628643ba---79879093104.pdfIn PDF document text
    • http://deshdunya.com/blogimage/file/torepafowadagisolit.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/79a3cde61de7353c10bbe695a614b198/gukelejatasar.pdfIn PDF document text
    • http://studiosiciliani.eu/userfiles/files/10061152877.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f775e6c648---duruzir.pdfIn PDF document text
    • http://se-ty.com/uploads/userfiles/file/mebonu.pdfIn PDF document text
    • https://aashianarealty.com/file/jomirogiromila.pdfIn PDF document text
    • http://gimhaejazz.com/fckeditor/userfiles/image/79093311500.pdfIn PDF document text
    • https://imad0c0.com/js/ckfinder/userfiles/files/56177809089.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=intervention+for+renal+calculiPDF 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_off0000ccb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e4ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CE 10276 bytes
SHA-256: 4b18e2fe09cdf30c2bdff553271281c8bb506c7213fe5f5d5eb30e6fb0181a2f
font_02_sfnt_off0000fc13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC13 20288 bytes
SHA-256: 4356f3846632b1b5250bb0a2db60c67dc71c8f1fdea6c2b66964a4547324ae88

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