Malicious PDF — malware analysis report

Static analysis result for SHA-256 80fffea2d5a17beb…

MALICIOUS

PDF

110.2 KB Created: 2021-09-02 17:24:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 48c327bc45000ba335bf51a1c8657f03 SHA-1: f2f721019992ff2da0816d503124cd9e6e320818 SHA-256: 80fffea2d5a17beb2558f667607c4096f377ad60e980909f5ec1d3d7ae80e4b5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were extracted, the structure and URL patterns are consistent with a phishing lure that likely leads to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://www.gurkhasfinance.com.np/ckfinder/userfiles/files/nujasujudiruxuxogedularav.pdf In PDF document text
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/5426fad45479d5e651f279d7eaa7b8b9/99764445275.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3113aa6d15---34617211391.pdfIn PDF document text
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/339e825cb92d13f95e1d38de96900609/80275888442.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/16096f4f71afa0---raxupazixamezojojonisoti.pdfIn PDF document text
    • http://villahetzwartepaard.nl/survey/userfiles/files/84966520944.pdfIn PDF document text
    • https://radmangroup-ye.com/rgfiles/file/27961248036.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085ceec52f14---94194239386.pdfIn PDF document text
    • http://paulabenveniste.com/UserFiles/file/boxumobetubu.pdfIn PDF document text
    • http://avstralianature.ru/ckfinder/userfiles/files/79753502408.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160856cc8c4bbb---56746937652.pdfIn PDF document text
    • https://mzr-avocats.com/buddha/ckfinder/userfiles/files/zovekifarasa.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/1557db57b93c5d47f8685366e72d88aa/kebozanugutinurizub.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/u8lohq28v613a7d6tr51jtljo3/29119253530.pdfIn PDF document text
    • http://cityclick.it/userfiles/files/94956403503.pdfIn PDF document text
    • http://aldara-latinoamerica.com/userfiles/file/miverorojoz.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160826d1172d5d---dusasogog.pdfIn PDF document text
    • http://www.gitialiganjlko.org/ckfinder/userfiles/files/vepoxixudibameduvofavado.pdfIn PDF document text
    • http://www.abcklima.hu//data/editorfile/57360732112.pdfIn PDF document text
    • https://tatsolarlight.com/uploads/files/91998491124.pdfIn PDF document text
    • http://jump360.co/upload/files/20210822082157.pdfIn PDF document text
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/83108ccf2e8c7541d40b2f602d2eee6c/48379805507.pdfIn PDF document text
    • http://thevenetianmask.com/clients/71561/File/79299132766.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=directional+coupler+in+microwave+pdfPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14535 10864 bytes
SHA-256: f623e036a68b9620b6b0e240aece12e87561b8f33a48f5ffcbe01dabf28db463
font_01_sfnt_off00015e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E53 19972 bytes
SHA-256: 02d7d81940aed1f79b855cbf6c3c0cb84ee922e1d93569e7a8d3839e11475625
font_02_sfnt_off000192e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x192E5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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