Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce077054f6e85588…

MALICIOUS

PDF

78.6 KB Created: 2021-09-23 02:24:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: ee4be3b459ca5fe656272e09c70c0a4f SHA-1: c61982c3199f3fa3dd099b4eb6f96b596fa60290 SHA-256: ce077054f6e85588d59e9bfb727154fff9a06a5a7279fd735bc58bccdfca9bd0
212 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous links, some pointing to compromised CMS upload directories, suggesting an attempt to deliver a secondary payload or redirect users to a malicious site. The presence of PRC/3D content and ML classification further indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 9

  • PRC/3D content in PDF high CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://oniceh.ru/uplcv?utm_term=pokemon+hey+monster+game+download PDF link annotation
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/2962e5cc4ec3ad34641aeafd8024bbe0/22758772696.pdfIn PDF document text
    • http://tomei4x4.jp/js/upload/files/zekekifokamokemod.pdfIn PDF document text
    • http://unsersohn.com/images/file/levorujaduk.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/e96b00e8d7de6ed87c40905cc29d9f1e/wosudepeke.pdfIn PDF document text
    • http://whuntex.info/userfiles/file/67694579260.pdfIn PDF document text
    • http://zezoalza.com/ckupload/files/12661447027.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136389700005---52209963475.pdfIn PDF document text
    • https://lexcochoralsoc.org/demo/lccs/beta/userfiles/files/xakav.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/161315910a7c82---wesibuxudibukinokoteg.pdfIn PDF document text
    • http://agapetown.net/ckfinder/userfiles/files/zerorefel.pdfIn PDF document text
    • http://tw-tms.com/uploadpic/xw/files/96827476948.pdfIn PDF document text
    • http://gemwishrs.com/ckfinder/stones/files/55300025299.pdfIn PDF document text
    • https://yukkumpulgroup1.com/contents/files/40502580714.pdfIn PDF document text
    • https://ylwlgwadmin.ylwl.cn/upload/files/87416153089.pdfIn PDF document text
    • http://wxhsbl.com/ckfinder/userfiles/files/20210911_185551.pdfIn PDF document text
    • https://brianhigbielaw.com/UserFiles/file/xunonenepud.pdfIn PDF document text
    • https://bushregenerators.biz/userfiles/files/31752841606.pdfIn PDF document text
    • http://iproperty.ae/userfiles/file/33067621287.pdfIn PDF document text
    • http://machulski.com/public/file/27479403069.pdfIn PDF document text
    • http://ubestsports.com/imager/files/20210901200203.pdfIn PDF document text
    • http://sanzmendia.com/userfiles/files/3289712971.pdfIn PDF document text
    • http://cleangroupbd.com/ck/upload/files/12408290892.pdfIn PDF document text
    • http://fazendasaojudastadeu.net/fotosempresa/files/33776682078.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/161493e75524f1---19071643297.pdfIn PDF document text
    • http://kubkao-kubpla.com/userfiles/files/lixorikanan.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_off0000cc5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC5A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE471 10896 bytes
SHA-256: 65f038def9d5ed99a45f2b8563271408447cad20ec9f153e19f43476fbfd4f12
font_02_sfnt_off0000fd66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD66 18124 bytes
SHA-256: da54f26f9a8785e22a6db2942c47c93255590aa80b3f2060148f033372009b22

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