Malicious PDF — malware analysis report

Static analysis result for SHA-256 95e9eacdbcb37cbf…

MALICIOUS

PDF

84.2 KB Created: 2021-09-07 14:16:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 885b87c8dd01a8c2a239b45434c533af SHA-1: 814f3d5d06ad5542db72625b69137798f3be1382 SHA-256: 95e9eacdbcb37cbf16f531d9b70cbb525405f800e17e07ff268c35c5392c2184
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, detecting it as a phishing trojan. The heuristics indicate it functions as a link farm, with numerous URLs pointing to other PDFs, some hosted on compromised CMS uploads. This suggests an attempt to lure users to malicious content, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

Heuristics 6

  • 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.
  • 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://babywagen24.de/userfiles/file/kimedawazujiguzubave.pdf In PDF document text
    • https://linhngapt.vn/upload/files/99595478110.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad8b587620---runaz.pdfIn PDF document text
    • http://asu78.ru/userfiles/file/82637700725.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/96ad84ae9e04efc617c7f54c9e933976/tekazatobo.pdfIn PDF document text
    • http://synhbio.com/upload/files/52148839855.pdfIn PDF document text
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16096a70ca9cd9---99352270126.pdfIn PDF document text
    • http://langmypham.com/luutru/files/15945090319.pdfIn PDF document text
    • http://alkimosgb.com/userfiles/files/zomarilopisepukor.pdfIn PDF document text
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/a97c81eae9468a3a4e3d8d50166763e0/leganuguduxalupesixix.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/18328162585.pdfIn PDF document text
    • http://banhangcongnghe.com/upload/FCK/file/3163386374.pdfIn PDF document text
    • http://www.grupoaccs.net/ckfinder/userfiles/files/felotawajexekodekogo.pdfIn PDF document text
    • http://hrudolf.com/userfiles/81714336558.pdfIn PDF document text
    • http://kovofilm.cz/userfiles/file/lisilebilagifoma.pdfIn PDF document text
    • http://gustosandvic.com/ckfinder/userfiles/files/paxetobufal.pdfIn PDF document text
    • http://zonweringbelgie.nl/ckfinder/userfiles/files/wopitagorivov.pdfIn PDF document text
    • https://rendszergazda-cegeknek.hu/ckfinder/userfiles/files/pekevuwapunigakob.pdfIn PDF document text
    • http://superlitefan.com/uploads/files/34690381059.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16116f39764526---rirako.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091c67c6f286---mumekowobetek.pdfIn PDF document text
    • https://anthonygillant.com/userfiles/file/vorakarawekumasukenumufas.pdfIn PDF document text
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/709342b8783a690fde83628754441ae9/pifiluvuzava.pdfIn PDF document text
    • http://smart-ventures.ch/upload/Editor_Images/files/92464739812.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe5c206815---70678634640.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/babc87cb837be0c60059c43cc8cebd71/64548181651.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9e450df3d---fotepumedano.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=this+is+halloween+easy+piano+pdf+freePDF 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_off0000e1f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fa0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0E 10660 bytes
SHA-256: e0327e94eff296afaa401238e5f038f8a4103441721ffad79d6b9c24b9d2db2d
font_02_sfnt_off0001126e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126E 18340 bytes
SHA-256: 9e6508f5f6133988544dbf53f82f73f33640fc2f0f14f62d7a081612d102ecef

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