Malicious PDF — malware analysis report

Static analysis result for SHA-256 92b298d6be820b83…

MALICIOUS

PDF

88.3 KB Created: 2021-08-18 07:20:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: c3be5e94af10c944838c178724e55332 SHA-1: d07da804bf092cb85d024118e75423b7bb372347 SHA-256: 92b298d6be820b8396e24d031f947f3ea6db3b221093946f30fc334215faf09a
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various websites, many of which appear to be compromised or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or SEO manipulation. The embedded URLs suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/22i8k7htarb5s7vkg0psv9ng4f/kilasuro.pdf In PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/e298d92c33c911dfc311e05c064b37bf/wuwubezixofebij.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/ludinevulusufe.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1608c752f71f3c---xeresokosoxutegozazij.pdfIn PDF document text
    • http://brno-skoleniridicu.cz/ckfinder/userfiles/files/dilixoweroxuvulikufoz.pdfIn PDF document text
    • http://jimmartinfamilyreunion.com/clients/35696/File/zebuvivujuzifu.pdfIn PDF document text
    • https://toyotaautobody.com/ckfinder/userfiles/files/11064706190.pdfIn PDF document text
    • http://voszveszprem.hu/_user/file/ledokededodebenit.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/9404b845d146f2237dac541b69ca3acb/tomenujeravegedepajipunem.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/ecef62b20c6e1d54a04510b0acb8dc02/fokulawovawenidup.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b7b6c7508d---novodofokel.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607491b60ae98---xobugesatumifofugakad.pdfIn PDF document text
    • http://blpest.com/UserFiles/file/mopafejewinilol.pdfIn PDF document text
    • http://goteneplast.se/files/images/file/jumanaziraxivuvo.pdfIn PDF document text
    • http://thepducphat.com/upload/files/gavegafewazawokagoxusedib.pdfIn PDF document text
    • https://ph2020.org/FCKeditor/file/62537073196.pdfIn PDF document text
    • http://ttmplus.com/userfiles/files/66042241377.pdfIn PDF document text
    • https://homeuu.biz/upload/ckeditor/pages//files/69448466212.pdfIn PDF document text
    • https://colakcivi.com/userfiles/file/19818366024.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/bbe1fdb4bf2fd00c57527975b76eef4a/70021386625.pdfIn PDF document text
    • http://hcvitamin.com/webroot/img/files/bopere.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/dekiwemosaxejuxikawo.pdfIn PDF document text
    • https://anfauglir.com/images/file/52541126812.pdfIn PDF document text
    • https://shreenathtechnologies.com/userfiles/file/bozapujel.pdfIn PDF document text
    • http://www.anjhimayath.com/upload/file/sasizetimidagupij.pdfIn PDF document text
    • https://hyundainhapkhau.vn/upload/files/zunetilerazopiz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=la+novia+de+estambul+capitulos+completos+en+espa%C3%B1ol+capitulo+5PDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB66 20432 bytes
SHA-256: 224eb8a69768182804771e88a3612181c5a854f853befea03bc8df5fe934b258
font_01_sfnt_off00011d02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D02 11180 bytes
SHA-256: b86df0ccb36ac6afa3e965c80c39e566a160ad5e980f6dfc7f0897b9d7315a9b
font_02_sfnt_off000136c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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