Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce0662c3f02fdccd…

MALICIOUS

PDF

144.6 KB Created: 2021-07-22 02:26:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 9e9882d7117b1dce13701533ac66696f SHA-1: 27e5077fd613e49a83873fc62c6623d7f2217889 SHA-256: ce0662c3f02fdccd48900a9ecd7f38268b9bd3a3ba485475de733d0ad4afe401
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm or SEO manipulation tactic. The embedded URLs are likely intended to redirect users to malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9733

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.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea8ec2206a---liwatarixubukunujak.pdf In PDF document text
    • http://asckhn.com/acskhn/userfiles/file/vugixulinevibamabepe.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609f9c26c095f---56968313452.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/a79ddbfa5bafcd1722e148f23ace4592/gofepomajatinom.pdfIn PDF document text
    • https://andana.us/files/files/ralenokumizuwufe.pdfIn PDF document text
    • http://automotiveenergy.cz/userfiles/file/98105173992.pdfIn PDF document text
    • https://benjamindreyer.com/wp-content/plugins/super-forms/uploads/php/files/47d4acc939c6cb39b6cb199814523d54/xezepizojoko.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb2af68d9de---vujizesopiwebid.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/tuxig.pdfIn PDF document text
    • http://interstyle.org/content/xuploadimages/file/gelafiga.pdfIn PDF document text
    • https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/769d0qagn87fm70me85uqhadsf/sasojojewomijifokakuraf.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1606c82e43f04f---xopefefiroxovevix.pdfIn PDF document text
    • https://turismopontevedra.com/ckfinder/userfiles/files/77031847294.pdfIn PDF document text
    • http://peneleos.pl/userfiles/file/25058905490.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160796781e8d78---jujotobexegedokujor.pdfIn PDF document text
    • https://olivierdaulte.com/ckfinder/userfiles/files/xamobepadubidel.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bae5fc2c215---babolawobokedatopatimu.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5a934a93b---goxuvazamavosiwejutol.pdfIn PDF document text
    • https://signika.pl/Upload/file/mivuzubosapazovebepajaza.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160919a83bef50---95402024137.pdfIn PDF document text
    • http://rentbucharest.net/images/userfiles/47694234383.pdfIn PDF document text
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/160764c0696eb7---juxaludonobakuzojawejuw.pdfIn PDF document text
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/d47f1edb8dd8d5dcc3941cbcafac22d5/99044136976.pdfIn PDF document text
    • https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/261pafb70ralcv0a78dcspmhp8/rovawi.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/faa5e935e1a54a79b954b74354f20201/21472766546.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=the+god+baal+in+the+biblePDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a4bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A4BF 10364 bytes
SHA-256: f4699def39cf067185ad638e08311fbf9302ebc75c60456a6600f0d8cee0bcb2
font_01_sfnt_off0001bbd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BBD0 27108 bytes
SHA-256: 86ae998632e5f194a24e0026b13b9a0af6e161634f51c3c06379041fc21d9474
font_02_sfnt_off0001fc8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FC8B 18772 bytes
SHA-256: c0fd189c14c931e00fbf0f19326821b38de0f56b451009c4354ca9aed83e5925
font_03_sfnt_off00021bd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21BD3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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