Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f32217564de0c29…

MALICIOUS

PDF

81.5 KB Created: 2021-09-01 01:49:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 09f0fa105b167ae95bfd2b5718270db7 SHA-1: 8e2bd0113f99738fa76d335f0befb895d42f9944 SHA-256: 0f32217564de0c290abced58e9e3db50f1780a68eae8a848d7501bdf2bc3e6dc
156 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://bettekingproductions.com/clients/874300/File/kuxoxorofupasipanifujobu.pdf
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/c7jhpl7dbj7ge0c6dvid26drog/jalevoxuduvaxapejibatosot.pdf
    • http://makesrealsense.com/ckfinder/userfiles/files/xadovedanefo.pdf
    • http://lactopad.com/uploads/files/87851613469.pdf
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2e011e9ab7---jazobivu.pdf
    • https://deycaterers.com/ckfinder/userfiles/files/luritapase.pdf
    • http://blackwingsexpress.com/upload/userfiles/files/37296185915.pdf
    • http://beerskiboot.de/img/upload/file/solobizemedubelin.pdf
    • http://psystems.gr/Administrator/uploads/userpics/OutPostImages/files/43947414942.pdf
    • http://aj-logistics.com/stock/userfiles/file/50651516846.pdf
    • http://nuestratierrapremios.com/campannas/file/zopizesizixa.pdf
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/ae5n2kb095og92gphrrci1p8u7/vizakulaxa.pdf
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/evekqkrndom5882t70om4qi81b/muzolofedulozari.pdf
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/219a56fad4ca0e49312980d51de2a7a4/38300054590.pdf
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/de7444d72628faaa934737a88de82187/jajebuzumes.pdf
    • http://elitaliaweb.it/upload/file/sisululip.pdf
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/ldheo9qu04vb75rmle30pemeie/24543673415.pdf
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/a06f3b15f0987744a44fd057052947a3/pezoxobaginabuwono.pdf
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096a13983072---34385553806.pdf
    • https://roweryelectra.eu/app/webroot/uploads/file/16230137273464.pdf
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082cc39559cc---notolugamibesokunijip.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/0mg52t8l945rdgk71jif78f2n3/41434610204.pdf
    • http://anhuifan.com/upload_fck/file/2021-5-25/20210525084232660253.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=9th+grade+placement+test
    • 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_off0000d900.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD900 16792 bytes
font_01_sfnt_off0000f112.bin
47733a7331d6c11f5294f0c7fb83e7b4d35422a9605305c7633d1a1839737cda
pdf-font-stream PDF embedded font (sfnt) at offset 0xF112 18252 bytes
font_02_sfnt_off0001201c.bin
41fa3cdb970693329df19160af634a00c1c297f8ebdb96ea736ade14dc9e30a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1201C 10820 bytes