Malicious PDF — malware analysis report

Static analysis result for SHA-256 e20d616f4d6abbae…

MALICIOUS

PDF

77.8 KB Created: 2021-09-18 17:36:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: e0de6f94652c5226147922324aced72b SHA-1: 340aada7af62c7c5934d2e88918724e098eb09c8 SHA-256: e20d616f4d6abbae3d90f8025b7e3472d9909a7dfffad2b1e5d6fadca594dfda
184 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple external URIs, including one pointing to a raw IP address, indicating malicious intent. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely serving as a lure to download further payloads or redirect to phishing sites. The presence of embedded JavaScript suggests it is used to execute malicious actions within the PDF viewer.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://crysiq.ru/uplcv?utm_term=convert+mp4+file+to+wav PDF link annotation
    • https://pacpartner.net/images_client/imagesfile/84289473638.pdfIn PDF document text
    • http://a2kat.ru/userfiles/file/22929753029.pdfIn PDF document text
    • http://staceyasp.com/UserFiles/file/18587203489.pdfIn PDF document text
    • http://leaguengn.com/userfiles/file///levekodolojit.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/16133029077d88---kazagajakazalumaxosimeb.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/jpdefdmacs3c56md3gg74bsmni/xejogeros.pdfIn PDF document text
    • https://gitedu.in/ckfinder/userfiles/files/14261488525.pdfIn PDF document text
    • https://coaching-jk-academic.com/ckfinder/userfiles/files/lutuluwojuvamubarefusewu.pdfIn PDF document text
    • https://www.shamshabaddiocese.org/files/js/ckfinder/userfiles/files/7970559692.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16130bde0ce1f6---gusalotodu.pdfIn PDF document text
    • http://soc-in.com/data/media/files/vimas.pdfIn PDF document text
    • https://bruceleevideos.org/images/file/45540963632.pdfIn PDF document text
    • http://autohondl.cz/userfiles/file/2665902505.pdfIn PDF document text
    • https://confidence-ist.com/ckfinder/userfiles/files/satugubuvugoberuzo.pdfIn PDF document text
    • https://floraplant.gr/FCKeditor/userimages/file/guzekub.pdfIn PDF document text
    • https://harkakotony.hu/UserFiles/file/84192192059.pdfIn PDF document text
    • http://wimborst-ceramics.nl/ckeditor/ckfinder/userfiles/files/89784690416.pdfIn PDF document text
    • https://sport-jicin.cz/dokumenty/senutijijuf.pdfIn PDF document text
    • http://157.230.241.115/image/upload/File/regeso.pdfPDF link annotation
    • http://lex.tj/img/file/28069011832.pdfIn PDF document text
    • http://chemonova.com/FCKeditor/file/vanubatetakixaditefu.pdfIn PDF document text
    • https://bcm.es/files/galeria/files/60006823247.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/c8614bde6d8b30679391d389eae8b21e/92217410381.pdfIn PDF document text
    • http://studiolegaletrotta.eu/userfiles/files/vozewoloviburome.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_off0000cd21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD21 10612 bytes
SHA-256: 92d46f9366e6d616b703e56ba9288a22e3e8b56f6478c71b7832378b3d55800e
font_01_sfnt_off0000e57c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57C 17120 bytes
SHA-256: 6c6b0710b9aad50cfc7bd6969b8771b9a9d5283050231de95281e08cc8107a6a
font_02_sfnt_off00011197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11197 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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