Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b7a6a0341eecfb…

MALICIOUS

PDF

89.3 KB Created: 2021-09-06 01:48:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 071f367b9ed1573fff77bf9012d61d0f SHA-1: c3ec1d147ce1d5c5d1eaedd30e258645ce02f6bf SHA-256: d0b7a6a0341eecfbb55bbd8ffe054e2b507e550f80c1e9d2e06a8d20ab0a647b
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 hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely involving exploitation or redirection to malicious sites.

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 https://chcial.ru/uplcv?utm_term=winners+take+all+the+elite+charade+pdf PDF link annotation
    • http://suleymanporoy.com/img/userfiles/files/94067327515.pdfIn PDF document text
    • http://fst-uinsu.net/userfiles/files/9641531356.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/066b2fa1c2a17e73198abf7610db5866/81219786361.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16096aecee68c4---gogug.pdfIn PDF document text
    • https://ht-cooling-j3t.com/contents/files/jojodosadibamoxijenawipiw.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/vhq6ce5f2qfo88a2js090d4ci5/powibeleneloxo.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e607a41a0f7---bepewupej.pdfIn PDF document text
    • https://nanyangtextile.com/userfiles/file/gagixiredubifiwig.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf04703ce6---lozoxuviv.pdfIn PDF document text
    • http://nurugelexport.com/ckfinder/userfiles/files/37224452600.pdfIn PDF document text
    • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/5m1dmi5jqhlkclv0imm8nfiju0/toxasavovuwirakumiwofeza.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1607f4e157e586---luledijupute.pdfIn PDF document text
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/675d69a2d108fafad97c19bf1008b41b/limaviz.pdfIn PDF document text
    • https://ou-ravda.com/ckfinder/userfiles/files/josufusapano.pdfIn PDF document text
    • https://securitydm.net/slicice/file/37051211151.pdfIn PDF document text
    • http://puzynowska-kancelaria.com/userfiles/file/90671971683.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16073107529e42---fodogatesonipol.pdfIn PDF document text
    • http://jjburgerut.com/uploads/files/patigifaju.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/91078a51b46eb06d9f19f1b4c59d2546/podenonipomexogoxudarisip.pdfIn PDF document text
    • https://orrizon.ru/images/file/19202444772.pdfIn PDF document text
    • https://bacninhonline.com/webroot/img/files/pazemizidituzikak.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083735c1d7c4---mixuvomenujifutininosifi.pdfIn PDF document text
    • http://spy-military-labs.com/userfiles/file/raduxodilumema.pdfIn PDF document text
    • http://altronic.pl/!mag2011/userfiles/file/lerelanifexumej.pdfIn PDF document text
    • http://isgsrl.it/images/file/zarepukapefigipej.pdfIn 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://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_off0000f513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF513 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D2A 10680 bytes
SHA-256: 106236b90f212a65ac122aa082dfbd55fdd5084c74ebb2c83cb1dc63f23066e0
font_02_sfnt_off00012597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12597 19212 bytes
SHA-256: 452518204351b6a4e5eb6b330ce1f99a2261affed7e0d3271f48a2589cb052a5

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