Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee1e6833ff7a565…

MALICIOUS

PDF

93.6 KB Created: 2021-09-05 13:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 4054028ded1646b1ac4ff1841e60345d SHA-1: efc6df6324645b022f5d36c85cb054fe3aba146d SHA-256: bee1e6833ff7a5651dd40a47c02ec9b03dfa14cf37df41134ab730dd4538c32c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple compromised WordPress upload directories and other disposable hosting sites, likely to distribute further malware or phishing content. The presence of numerous unknown URLs suggests a broad distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/9eeeb73de1ba24d55099639fed71fc23/mamebodavorilewikenox.pdf In PDF document text
    • http://onyx-innovations.com/assets/ckfinder/userfiles/files/40444212863.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9367032020---76388436158.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082203d13c2d---fukivugekesazifapomati.pdfIn PDF document text
    • https://podiummagazinenews.com/ckfinder/userfiles/files/37775065689.pdfIn PDF document text
    • https://pelletier-tp.fr/ckfinder/userfiles/files/68902053466.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/83v1lq2s34odppac7hp0rfdmun/16045707370.pdfIn PDF document text
    • https://majubesar.info/contents//files/gavozumopobopumixel.pdfIn PDF document text
    • http://longearedhounds.com/clients/65743/File/jasugawelanofiralasunol.pdfIn PDF document text
    • http://pappteam.hu/userfiles/file/vemekiputowuvakurowi.pdfIn PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6bca23c17---10374168049.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//segolugoti.pdfIn PDF document text
    • http://lakesideterracecondo.com/clients/41361/File/kogopepajinuraxemasejul.pdfIn PDF document text
    • https://ebal.ro/app/webroot/files/userfiles/files/86636126224.pdfIn PDF document text
    • http://francescofesta.it/userfiles/files/76800445265.pdfIn PDF document text
    • http://lycee-elm.com/userfiles/file/gabol.pdfIn PDF document text
    • https://guanlai.tw/uploads/files/202108141309528342.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/a4e582cf4dfce8f892d6e6e4efba4f59/14677140658.pdfIn PDF document text
    • http://pomocnaukowa.net/Upload/file/68761563328.pdfIn PDF document text
    • http://blessingsngo.in/userfiles/files/63545907844.pdfIn PDF document text
    • http://berrybucs1973.com/clients/3/3a/3a2d6910be1067feaf6dc79f90d505e0/File/92016047874.pdfIn PDF document text
    • https://ssmavidiyar.com/public/content-images/files/81054244027.pdfIn PDF document text
    • http://pascalparrot.com/uploads/assets/file/nojejojagamifeleda.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=parts+of+speech+games+pdfPDF 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_off00010883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10883 18368 bytes
SHA-256: 78b29855073045ccda5a97bce8c13a62b98c365e053410c23b98af3f2fc55660
font_01_sfnt_off00013852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13852 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15069 10828 bytes
SHA-256: 13dff4e864a2fb892639d27520f7cf7eb51bec83b8bc21b1679d8c661049b0d6

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