Malicious PDF — malware analysis report

Static analysis result for SHA-256 90aaae3d02f7efa3…

MALICIOUS

PDF

77.1 KB Created: 2021-08-31 06:31:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a3269506e3eadb53dc77d675f40b4257 SHA-1: b130197ceccd3aba7f539eee9dee05d8b841cac6 SHA-256: 90aaae3d02f7efa350c6b0a6fd4970bcb62701785d08569b0e9c1e074f5bf3b6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. Heuristics indicate it functions as a link farm, pointing to multiple compromised WordPress upload directories and disposable hosting sites. The embedded URLs are likely intended to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a51e29a1294---33606754286.pdf In PDF document text
    • http://fullcolorspandoeken.nl/userfiles/file/98760423196.pdfIn PDF document text
    • http://flatadministration.com/uploades/fckeditorfile/mamenufake.pdfIn PDF document text
    • http://goddesshair.net/upload/users/files/71609178712.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/93774622026.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/d59fb28424d132369c44ae1a0e5e270f/4009593717.pdfIn PDF document text
    • http://evergladesharvesting.com/ckfinder/userfiles/files/miwiwuvulanizofilovulives.pdfIn PDF document text
    • http://rkmaster.ru/uploads/files/63471981386.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/mdo0sb5rh37knu5e61i35hcvi9/16568805182.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/1fda2f6e860baf25d770d9943270ce69/31958427067.pdfIn PDF document text
    • http://drive4smilesontario.com/clients/e/ed/ed023a0734c265ca673a92d1d81de675/File/63968115954.pdfIn PDF document text
    • http://termocity.by/pics/files/mofobugobobo.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/83a73d3fd401ebea81b203029c545394/47651637584.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b2304e3a017---59597601446.pdfIn PDF document text
    • http://picassooutdoorliving.com/fckeditor/userfiles/file/xoliteluforewamobar.pdfIn PDF document text
    • http://tayles.com/uploaded/41578800900.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6545b5a809---42220253682.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3eaa55542f---jikipuj.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c83ab59040---10401978170.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609095f59057b---59784178302.pdfIn PDF document text
    • https://franchiseharbor.com/files/files/6516131910.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ad87537716a---fizugabutejekukidaf.pdfIn PDF document text
    • http://minhquoc.vn/ckfinder/userfiles/files/kazoxuvexokaluposewepo.pdfIn PDF document text
    • http://geoodwierty.pl/files/file/38183330325.pdfIn PDF document text
    • http://discus-rus.ru/upl/file/53025285572.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=pubg+all+song+download+mp3PDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB75 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e38c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE38C 10812 bytes
SHA-256: 4220d69e3cce84b70c835189c4e9d17ea6e13f5bac8c421ece966deb093c6558
font_02_sfnt_off0000fc16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC16 16560 bytes
SHA-256: 2687ad8c0cdf7a7ad800fdd6e4c063356ccd5de21d8f1dd4189c74802440148d

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