Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f38c46d6383cc2…

MALICIOUS

PDF

90.4 KB Created: 2021-06-25 17:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e5e4012d7e0b15ee0803926703c8eb5e SHA-1: fba96534dcaae71e94a459d2a12e817805cb446a SHA-256: 38f38c46d6383cc20091033f333e5381a9574c9164874d1e116d9c5e8c8e1c41
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to websites hosted on compromised CMS platforms, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or exploitation.

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://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160afa6396a2f5---20656402533.pdf
    • http://vincentpopetutoring.com/clients/d/dd/dd6b7bcf94cac99d3bed97cf8166637b/File/39820788922.pdf
    • http://akinmedikal.com/uploads/file/tivulemuduzokadido.pdf
    • https://industriameccanica.it/file/50184015062.pdf
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/js78govht4gc4mgmc52vd5jni6/ladufu.pdf
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160887acc32060---65946961810.pdf
    • http://fantalife.nl/userfiles/file/fiwedudopeguvowez.pdf
    • https://sieuthimaytinhcu.vn/upload/files/45311693045.pdf
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160791a3469b10---62462718977.pdf
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/lje5tsilb4q63gmd54a99tr485/lepaputuvuvovuv.pdf
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/f8fb6cda5922f1c9ef135808ee5bee01/28822902798.pdf
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/0ceb22291e2fdca84e81e3e96f17b987/rijev.pdf
    • http://asckhn.com/acskhn/userfiles/file/21552557625.pdf
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/303e915b9384189cc50b71a79db5967a/zafuduvajafumixib.pdf
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/87a1e07694a9d612841dbf54a87e4982/rinubesukufu.pdf
    • http://citadelcaralarms.com/userfiles/file/35693188123.pdf
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160871a1680e94---20498082444.pdf
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607634b26eabd---mepepoluvimibogetugiroki.pdf
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16092fbaf83eba---22656456599.pdf
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd761d0833f---42543581420.pdf
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/80e5018f38434d9a66c46d63a731a12a/50028855901.pdf
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/eb7d228b91ecfb148179e168b67077b0/54431988547.pdf
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c4e158e032b---ramejewos.pdf
    • https://aravlicraft.com/cmsCart//upload/file/56613832022.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=nausea+from+lack+of+food
    • 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_off0001002a.bin
4ea5f812048a817447909d0512e040c511587426a3dcfbd31fe4a7a2c14ddaf5
pdf-font-stream PDF embedded font (sfnt) at offset 0x1002A 10512 bytes
font_01_sfnt_off00011827.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11827 16792 bytes
font_02_sfnt_off00013039.bin
fdc3a9a76c17a7f4c0a0f9b64a02deda33fbea7a8e9a70533cf7dba357e382e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x13039 17068 bytes