Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f0d0e1b42f125ba…

MALICIOUS

PDF

70.5 KB Created: 2021-09-15 14:24:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: f731a80a48795517499498250cd4d5e7 SHA-1: fee70debadd0ed6486e501a1a2c457c47d27c4b8 SHA-256: 0f0d0e1b42f125ba1ddaf1fd3b0914b9827c4d339c3094f2126301e4eb4462b1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on disposable domains or compromised CMS uploads, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and link farm behavior are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://gyn-ordi.at/myPix/file/62957762584.pdf In PDF document text
    • https://mariapolis.es/ckfinder/userfiles/files/58643150581.pdfIn PDF document text
    • https://zemtechnika.lt/public/site/0files/tifusefusumidiwoniwekolex.pdfIn PDF document text
    • http://fixmyhelicopter.com/project-new/christianbook/upload_images/file/sewimezamododawipujir.pdfIn PDF document text
    • http://onfireinteriors.com/userfiles/26626933898.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/nmvblrlhbgeho31hhbubha70tq/43498628673.pdfIn PDF document text
    • http://sriagasthiyarastro.com/FCKeditor/userfiles/file/50539304191.pdfIn PDF document text
    • http://vet-arrighicolangelicristilli.eu/userfiles/files/gewopobupidazolukivar.pdfIn PDF document text
    • http://gcsiva.com/files/userfiles/file/tunalos.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1613f7b23ab495---75088700866.pdfIn PDF document text
    • https://goez1.com/10005001208290177/ckfinder/userfiles/files/tasir.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136b000bfd59---nuxavezugafuviro.pdfIn PDF document text
    • http://urbancollab.com/userfiles/Proj_Name/files/nagosomotenadirugazux.pdfIn PDF document text
    • http://galsabino.it/userfiles/files/95605124576.pdfIn PDF document text
    • http://savoie-outils-coupants.com/ckfinder/userfiles/files/jigapixoborakugigewafek.pdfIn PDF document text
    • http://lnhaihui.com/userfiles/file/20210909115412_1929988347.pdfIn PDF document text
    • http://hangtatmj.com/userfiles/berojasisikupofanopifo.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613f56d1ed9bb---3067817392.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e42a389ace---80767251318.pdfIn PDF document text
    • http://boxshop.mn/userfiles/files/barabolafukop.pdfIn PDF document text
    • http://csc020.com/userfiles/file/20210901120951_6jrb0u.pdfIn PDF document text
    • https://everestart.com/images/stories/file/figobagijuvik.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136ba04ca994---3706866568.pdfIn PDF document text
    • http://stjconsulting.it/userfiles/files/puzarexodonanotoneb.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=pdf+document+translator+apk+modPDF 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_off0000b312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB312 15908 bytes
SHA-256: e4df1a65b0630ac2959f207b63f3588840964df6da519d15874822102dc30615
font_01_sfnt_off0000dbbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBD 10884 bytes
SHA-256: e9a564417e467a8e2da82a23ff8a93a0835af454d6e20781e77c30e6c8bebece
font_02_sfnt_off0000f4f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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