Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e34c51bbb5b57a2…

MALICIOUS

PDF

80.7 KB Created: 2021-08-30 20:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 53770036120cdb5e976fa70dbd2ab418 SHA-1: 0cd8485699d2789d12f47900d7b7cd0122b21f7e SHA-256: 2e34c51bbb5b57a2b95d2a33f33d996213746f88ce2f944d1b59bab40e02e9e7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that point to compromised WordPress sites and other domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or distributing further malware. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://catamma.ru/uplcv?utm_term=best+way+to+get+worms+out+of+the+ground PDF link annotation
    • https://greenlakepaint.com/ckfinder/userfiles/files/60506894217.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094128e2416d---rexekulonunafo.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607200a794ec6---lunisolitax.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160814a792d218---75229303216.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098748347ac5---xemuzimekifokotide.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079689cbf817---memivobukitiw.pdfIn PDF document text
    • https://retake.dk/ckfinder/userfiles/files/simubamenifojitoxafila.pdfIn PDF document text
    • http://nattuvaartha.com/assets/ckfinder/core/connector/php/uploads/files/kexedojalogaseloxazirirat.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/vk8pvtoo5qv39r0ejkkn2p67a1/veduxabe.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/11826942819.pdfIn PDF document text
    • http://bangtutrang.com/upload/files/mefuvuv.pdfIn PDF document text
    • http://shsclassof1970.org/clients/872719/File/88804379954.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/cbm2e7ohea1f0p5q13fpj4s3a8/96373354468.pdfIn PDF document text
    • https://an-professional.ru/img/files/file/loruliwalufelaxewilumagib.pdfIn PDF document text
    • https://bhopalliteraturefestival.com/mpsdp/uploads/files/zujemusixexakulozararot.pdfIn PDF document text
    • http://nextgt.eu/uploads/file/38771095241.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160784c16d3371---6314040650.pdfIn PDF document text
    • https://biovuspharma.net/userfiles/files/derawaj.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/8e7886e9690b49b6858a77c9e5255685/fafiduxukamugu.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609b7a42b2a2b---linanadisitadege.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611157516b0ad---64190304460.pdfIn PDF document text
    • https://lotteppta.com/beta/assets/file/35064022504.pdfIn PDF document text
    • https://podereilmontaleo.it/writable/public/userfiles/file/wenilulanape.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/2ip5p0s9bo27lothm0n0hh2gks/95954989961.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/suwaboz.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_off0000d5dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5DD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000edef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEF 17372 bytes
SHA-256: 7ca3edc54f4c1cfa31a7135d76f6db6e9019511a6d11337671404f8daac376e5
font_02_sfnt_off00011b24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B24 11016 bytes
SHA-256: 2e50bcfe05cc5fde0f5a83ee2b2af4c45f0a7fdf7f215708375f5e6660aae60c

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