Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d7b783ddff440f6…

MALICIOUS

PDF

94.5 KB Created: 2021-07-06 03:27:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ba6c6877d64e0b70237f8a7c9e3c16cb SHA-1: 2649827cbac63cb9cc72a57bced0156366cb8770 SHA-256: 5d7b783ddff440f6edf9abd0b936eafd0685867de298489876389839ade0880e
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to numerous external URLs, several of which are hosted on compromised CMS platforms or disposable hosting. The presence of these links suggests an attempt to lure users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://fatamorgana.fr/uploads/assets/file/89863830096.pdf In PDF document text
    • http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160858e974f58c---zeregu.pdfIn PDF document text
    • http://newdimension.su/userfiles/file/67216147703.pdfIn PDF document text
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/6f0805a99b582b442fd218184e77afa1/rovezaxem.pdfIn PDF document text
    • http://saltokisport.com/uploads/files/49188832310.pdfIn PDF document text
    • http://filtrydokoparek.pl/img/all/7300490147.pdfIn PDF document text
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/5ec46e0d63fcf7cf7098a97f4032eabc/51081456700.pdfIn PDF document text
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/63683038638.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c6c67fdac9f---50124623137.pdfIn PDF document text
    • https://coil.hk/upload/files/23744312054.pdfIn PDF document text
    • http://deurenhanger.nl/userfiles/file/26891757319.pdfIn PDF document text
    • https://marljivo.hr/UserFiles/files/50654811328.pdfIn PDF document text
    • https://thefertilizerequipment.com/d/files/jelanefilawesos.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/472bb1c9bee85f0dac7e382bd783f4a4/lopolirul.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/e21ae3cd6e1059cec109b54b4c32daab/69564388109.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d1831c391ed---wutixax.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/ocejlc8hbt2ntmn87c0vu43c7d/71731174018.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16076233e28913---vupotapawaragopavojofi.pdfIn PDF document text
    • http://kasintorn.com/images/upload/files/nemolikuposufenu.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/9da7d897978a9b643ae8e6d588d65cad/89537039090.pdfIn PDF document text
    • http://interface-referencement.com/userfiles/file/65894597215.pdfIn PDF document text
    • http://shreyaghoshal.com/konadnew/userfiles/file/77079300282.pdfIn PDF document text
    • https://emmaushuis.org/pages/16163869102.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/oh508stuahv01tbe8bae80e94v/36052087626.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=hd+movies+area+300mbPDF 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_off00010fc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC6 17120 bytes
SHA-256: 5c4b60abdbe176133d8b21569a0f337d928a422685a210d078cf82d8cbe4c1a8
font_01_sfnt_off00013c85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C85 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001549c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1549C 10652 bytes
SHA-256: 4c6b666f87b9d23050e00d50bc39bb4c537a8c318fd9d3f426744a0d647a0f67