Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ccd06a072e722f…

MALICIOUS

PDF

86.4 KB Created: 2021-06-27 17:25:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cf4ec806b8a850b65155beb0bb051aca SHA-1: 6b3f01829d8428be6bded88dcb36840a4e548b23 SHA-256: 02ccd06a072e722f3901cbb2b2aab2be551506b5675a39c882e7a591dbfdb914
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was identified as malicious by multiple heuristics and an ML classifier, with ClamAV detecting it as Pdf.Phishing.Trojan. The PDF contains numerous links, many pointing to compromised WordPress upload directories, suggesting a link farm designed to redirect users. Although no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing or malware distribution lure.

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 http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160bca3b09d99d---24236134550.pdf
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607dcaacd9d8b---rirani.pdf
    • http://ilovegabal.net/fckeditor/_upload/file/66262795182.pdf
    • https://ktmcollege.org/public_html/userfiles/file/janonuno.pdf
    • https://itracmediav5.com/ckfinder/userfiles/files/85099130058.pdf
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/namufupijat.pdf
    • http://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/jonunisazefopogiwiloko.pdf
    • http://ahsaipu.com/v15/Upload/file/2021430648267319.pdf
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/9d16923cebd23b1df77c96b8421eaac1/56379560053.pdf
    • http://dentalclinicbangalore.com/uploads/57565143936.pdf
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc0b110208---digarubuloxanub.pdf
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be5bf7b7952---48508006218.pdf
    • https://penzionradvanice.cz/res/file/sazevepatebukeligazizis.pdf
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/16087b66fe673e---73218718152.pdf
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1609ac28f8d65f---tapunerotojobuludipol.pdf
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a5a9bd69893---17400176579.pdf
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5ca25f541---jikorixasugeriwewemakub.pdf
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608755da3d774---11393866119.pdf
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b4575d3e9b---zifesevaxo.pdf
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/7b62015294efc296e496ef62540b697a/sokidukapekinurokuden.pdf
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/1abc85ee28f9109eaf1185d950a321db/wuvovugikuvi.pdf
    • https://misionesmedellin2030.com/wp-content/plugins/super-forms/uploads/php/files/16l7shb1ami33tcoiv102ce884/tezovazajumejotufo.pdf
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/025cebda6d83be74e2c384b211d19eee/fivusilesor.pdf
    • http://csc025.com/userfiles/file/20210624060807_jzthgn.pdf
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c4b6dc918e---21916246461.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=this+24+hours+crossword+clue
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eec7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC7 16792 bytes
font_01_sfnt_off000106d9.bin
10d04cd024f32e595192cc591773804074748479809fe78c40b34768939312d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106D9 17632 bytes
font_02_sfnt_off00013452.bin
08a70b8cf4655c2414b9ed320c71832f31786daec62f0404e949859527cfb8ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13452 10452 bytes

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