Malicious PDF — malware analysis report

Static analysis result for SHA-256 725bb4743a31c1b8…

MALICIOUS

PDF

94.7 KB Created: 2021-07-05 18:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 47d862288981c229da9201b284cea688 SHA-1: 33a92ef23ac6cf3663ff6dc109d4d4d9a944301e SHA-256: 725bb4743a31c1b8267bd5ee9dd8c54467027a524d121e36222b1ceaa0393cb0
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous websites, many hosted on compromised or disposable domains, suggesting a tactic to manipulate search engine rankings or redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9806

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://amon-syotengai.com/userfiles/file/23412584144.pdf In PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/27160328539.pdfIn PDF document text
    • http://myjobcareer.net/userfiles/file/2021060308065673499.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/e17a2d084d3abe25875654aedba50fa9/33173441088.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/e5f9kiq73ig2hp5phk87vuanka/bugabexobafedakidujuzeg.pdfIn PDF document text
    • http://foto-preiss.at/upload_files/files/76543197901.pdfIn PDF document text
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608abd050bacc---xojawuxevinetalamowedadax.pdfIn PDF document text
    • http://dolphinegypt.net/userfiles/file/kakevoluvetizokoganim.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/a82e69d254df4fe58656206ddd195035/fomajawifejaxajelaki.pdfIn PDF document text
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/ad663b63f10b2552e07e8c9ee42dcb13/75531893981.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/5jjvajjr20jtg2gucamiccarg7/zemulujowebo.pdfIn PDF document text
    • https://avonsteel.com/UserFiles/file/puxevususoja.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/b2fb59d7ded8358f4648b1444c8590d1/15320088488.pdfIn PDF document text
    • http://alexhofford.com/temp/files/file/nuvitukimumozeja.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/o0gvqgj8v9mqmd4ba1u117mj5b/506497061.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/389ff481a7208df30a5563922f9de381/vejinobigolewetepemerom.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/6652418b9e70aa7ebda4132eee07b605/45692387863.pdfIn PDF document text
    • https://rybczewice.pl/userfiles/file/lunutikitopixusezozem.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9e418c7c29---navazewunapat.pdfIn PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/e3be3373af3328b1ba8adea6edf84bdc/54794821309.pdfIn PDF document text
    • https://study4student.com/cache/fck_files/file/8809273416.pdfIn PDF document text
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/19871a222b149f4ff58d8b3bc9a79425/90290957995.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/87512684126.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/1c01ba23226a15f93ba970d4a5f5735b/93985908070.pdfIn PDF document text
    • http://aclamerica.com/customers/CMS-IMAGES/file/9140970804.pdfIn PDF document text
    • https://kopari.hu/files/file/jofap.pdfIn PDF document text
    • http://provia-events.de/pics/fotos/1/file/pegumikudovapafavuze.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b15c74994f---metirozurepimulozizare.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=black+ops+snow+mapPDF 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_off00010f21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F21 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12733 17744 bytes
SHA-256: d1b9787f034515e7403458a9f9a3c65788576f9a8da9c544501c84e9fa275779
font_02_sfnt_off00015624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15624 10344 bytes
SHA-256: f14532cd36f2cc59e7bb0efc678234130c88a2c8e33465fba27f1d13815b9623

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