Malicious PDF — malware analysis report

Static analysis result for SHA-256 94278f477a0382ce…

MALICIOUS

PDF

100.9 KB Created: 2021-09-02 21:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a9d0a2da055100018d554bba021a0931 SHA-1: 716595c988a273000753e9e534704bf3ff212fc3 SHA-256: 94278f477a0382ce8abd55e214cb1d3f0204fd8e89f51598dee909a746315aef
156 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised CMS upload storage or disposable hosting, suggesting a link farm used to distribute malicious content or phish users. The PDF structure and embedded links are consistent with phishing or malware delivery campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://bawaniint.com/ckfinder/userfiles/files/juvadodanuvafigoti.pdf In PDF document text
    • http://sozopolihills.com/userfiles/file/nojagajitorifiroxe.pdfIn PDF document text
    • https://ruxthai-guesthouse-chiangmai.com/ckfinder/userfiles/files/demib.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f9dcbebb2d---vadejeso.pdfIn PDF document text
    • http://zakuskymoser.cz/www/ckfinder/userfiles/files/sataku.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16074d281029c3---jevimaxeludiwetukibeg.pdfIn PDF document text
    • http://racecross.com/upload/edito_fckeditor/file/83886327767.pdfIn PDF document text
    • https://phoenixturkey.com/upload/ckfinder/files/29227435315.pdfIn PDF document text
    • https://apinero.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b96807573---xapobizum.pdfIn PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160785afaa3b23---risasefixijipome.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/8ccf5c8f0292ede5fa5e38bd6f2f9b2c/juvuwuf.pdfIn PDF document text
    • https://dpt-mh.com/uploads/news/files/wumalavaj.pdfIn PDF document text
    • http://skolicka.eu/foto/images/file/31285112103.pdfIn PDF document text
    • https://toliveinchristjesus.ceosale.catholic.edu.au/application/third_party/ckfinder/userfiles/files/nojedexisove.pdfIn PDF document text
    • http://bhavalaya.org/ckfinder/userfiles/files/polupaj.pdfIn PDF document text
    • http://dajuicebarus.com/uploads/files/892474018.pdfIn PDF document text
    • http://ucity68.com/clients/e/ea/ea220da86df44fb0ae3b7c8e8295ccc1/File/bitedikazenadupisotid.pdfIn PDF document text
    • http://evergladesharvesting.com/ckfinder/userfiles/files/32835816783.pdfIn PDF document text
    • https://muguet.fr/sites/default/files/file/35344120691.pdfIn PDF document text
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/3u0m8mbqucalb8idlo3cic6qm1i2algp/divinunurozawini.pdfIn PDF document text
    • https://amatnieks.com/pictures/image/98387357885.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/gajul.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=orlando+furioso+english+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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12260 19300 bytes
SHA-256: 9f8c5357cb943c89563fda1a10b19b83bee8518de410caf353e0337150cf97f0
font_01_sfnt_off0001551b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1551B 10804 bytes
SHA-256: 8eda6d850a930c5f32393d4e968c192067861ced0652846d3b1b5e4243481200
font_02_sfnt_off00016db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16DB0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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