Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9f8c6c2f47680c7…

MALICIOUS

PDF

95.4 KB Created: 2021-06-12 23:52:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 53b1450cd475c2b6d2125305f2c9f14c SHA-1: be6028c0cb9839ac40da82f007c8c9aa1f87f3c8 SHA-256: c9f8c6c2f47680c78291644e9b201f4aff47b627de88a4fc3118bf9d343c948b
156 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It functions as a link farm, directing users to various compromised WordPress upload directories and disposable hosting sites, disguised as a free download for a religious text. The embedded URLs are designed to lead users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 https://smidgel.ru/uplcv?utm_term=bhagwat+puran+in+gujarati+pdf+free+download PDF link annotation
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/q09m2ce7nc1uuifh9s7rscag7q/wigoxufeviruju.pdfIn PDF document text
    • http://josephlillianmorrisfamily.com/clients/59960/File/75961999058.pdfIn PDF document text
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/6rrappv1654jk6i26dth0qok4g/wugereworurus.pdfIn PDF document text
    • https://nmcs.ca/userfiles/files/rejufigadimozavotowubud.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ea97394690---40124503204.pdfIn PDF document text
    • https://dalton-english.com/userfiles/file/paketu.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ecee0310a8---85689236393.pdfIn PDF document text
    • https://remoteyourstaff.com/calisma2/files/uploads/64865419702.pdfIn PDF document text
    • http://asiadomainstore.com/userfiles/file/54522639766.pdfIn PDF document text
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/d422aa7fc26e74b7eb6e5d43b177727f/pigasovukijapiwanibududo.pdfIn PDF document text
    • http://hrzservices.com/uploadfiles/file/97418539606.pdfIn PDF document text
    • http://altinay-law.com/images/file/sigorisarikubujuleja.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078fde3ae530---valosedutedelore.pdfIn PDF document text
    • https://syntellect.ru/Repository/file/25017343845.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/tamewizadokinudilopanazi.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/c5a8b705d315413f3856794405218ca4/kalutevelavurozaxazibane.pdfIn PDF document text
    • https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/aefe79884f2944c0eb487ab20ee00121/82411866084.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae0877f2b4f---fefewifovowagezikuj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10938 5344 bytes
SHA-256: 3a158d0b92dae8d33b47628cd2e113e31d7bc7fb9ba576c121d613cd8ca88e2d
font_01_sfnt_off00011b7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B7A 6476 bytes
SHA-256: 234da822e789d73defef775a60383c077a76f6608e3b5e5b362554852c6d39fc
font_02_sfnt_off00013099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13099 13188 bytes
SHA-256: b380943110e7ed0cb31a0cfd0974d1a35a8e11a0fe4ebaaea75faa201f7c17bd
font_03_sfnt_off00015a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A8D 6000 bytes
SHA-256: c6e978b31436c9e40879630e7287ec2d1dd0c458f5f583132557cae6835e2a18

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