Malicious PDF — malware analysis report

Static analysis result for SHA-256 180b78d33cbe8f61…

MALICIOUS

PDF

86.0 KB Created: 2021-09-05 19:59:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 8684a9fa3e542e30d68aa12e1c9d3140 SHA-1: aa76e76708b7990e4f318f1af088ff4f7f32bed3 SHA-256: 180b78d33cbe8f61c6eafd2be615fdd76c3edbc6b3afb28137090d6f805a75f0
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 compromised CMS platforms or disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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://nomylo.ru/uplcv?utm_term=embriologia+do+sistema+nervoso+pdf PDF link annotation
    • https://oxi-dental.ro/imagini_ws/jelexawasirizib.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0ad95e8d03---kuvovewadaxiwofutemopeked.pdfIn PDF document text
    • https://aathichudi.org/userfiles/file/tasitorizopiwiva.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606efcd183129---widemalisufokedozisif.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/e40df86e858b9e55ac3d812a3c8fcadc/80347660053.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/kmsnnlh5qn54un9poa2vf1vb1n/kisulugexowu.pdfIn PDF document text
    • http://ciskmv.com/css/file/73308579679.pdfIn PDF document text
    • https://pelletier-tp.fr/ckfinder/userfiles/files/4733759964.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/54e76f64f7153b0d904d8167481eeea3/kusuzixolakesij.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c251d966199---kojidobexodoret.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5cbb5729b2---28353671918.pdfIn PDF document text
    • http://harekatmemuru.com/images/Media/files/xafitokitosujumem.pdfIn PDF document text
    • http://cngwalk.com/fckeditor/userfiles/image/46347467614.pdfIn PDF document text
    • http://pet.nfe.go.th/m_site/ckfinder/userfiles/files/26724742649.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/kh8ribpjridm5r6ugg8e7hlmsg/48191926600.pdfIn PDF document text
    • https://netlandschool.cl/files/1474205938.pdfIn PDF document text
    • https://alshaabcoop.com/userfiles/file/68187532170.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d18f179da11---85732960432.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd6a715148f---69804489700.pdfIn PDF document text
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/5b48df8b931da0a51b43e28a466e886e/38745239684.pdfIn PDF document text
    • http://ottotech.center/userfiles/file/94775979703.pdfIn PDF document text
    • https://www.cylinder96.ru/admin/ckfinder/userfiles/files/ramavisafaligugewozixizo.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607db08cc4c98---julewiwamo.pdfIn PDF document text
    • http://benrassam.com/uploads/files/93341353189.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ac67c66adf4---bijeleliregafojepo.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa7286118e6---76042724506.pdfIn PDF document text
    • http://ctkupavna.ru/upload/file/gofafov.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_off0000e7f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F8 18624 bytes
SHA-256: bb034777953b6e9190325d642a899b0d5cba71213a49de0488557b3b8e8044cf
font_01_sfnt_off00011895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11895 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000130ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130AC 11028 bytes
SHA-256: 82cab8ffe240fe13ebbfdf808140d186d503325eae1527c7099e58c403e1bb12

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