Malicious PDF — malware analysis report

Static analysis result for SHA-256 4586f5e3b752f246…

MALICIOUS

PDF

117.5 KB Created: 2021-07-14 02:51:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 7a36320aa03ef56359be5c208e527d83 SHA-1: 54c4c91d61c71a5f57131dea2162beb4c63abac2 SHA-256: 4586f5e3b752f246bac324622daa6522b2a80a6e97d7432ef26686d814f12ead
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier clean score 0.0609

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://stroisvias.ru/userfiles/file/maxifaxi.pdf In PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160e3d7a195947---kawusos.pdfIn PDF document text
    • https://idd.no/ckfinder/userfiles/files/97401249776.pdfIn PDF document text
    • http://novichiha.ru/pic/file/75753738343.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/f1adf5d25b02ec540479cda1bcb70842.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9c6f18680---tibosoxafoxewilewop.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7f3bee5b8---fobulinefa.pdfIn PDF document text
    • http://firmykominkowe.pl/Obrazki/edytor/file/50605682301.pdfIn PDF document text
    • http://www.cerathai.com/image/upload/File/lijubunijutim.pdfIn PDF document text
    • http://technoculture.cz/admin/upload/file/nimuwazupobasaju.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088b9be135c7---xibosexurububomuj.pdfIn PDF document text
    • http://makingtheturngolf.com/clients/9/92/925d9bae4ecf380f28dbe0e1390c16eb/File/lawunoramomima.pdfIn PDF document text
    • http://ceraunavoltapizzeria.it/userfiles/files/guderuvazig.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/a7f9ce2ee3861418e5d11f9be00357ed/bomowese.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160717ba63ebed---22097903659.pdfIn PDF document text
    • http://basumati.com/app/webroot/ckfinder/userfiles/files/94331142917.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/10555057351.pdfIn PDF document text
    • https://denizlihorozu.com/resimler/files/7540790624.pdfIn PDF document text
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/ea7996c92f13ebd4f7bd98d4ed710656/78181544013.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/16070b1a057560---jelowizanelis.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/88cfcdd8e8a991df190f12a9fec4a2d8/48122290974.pdfIn PDF document text
    • https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/4m7q95ocs9b0584tadphcilv8n/40765393416.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/7pab6p5qas4i4fdj9gn8dtdme4/lomexorixegaxufew.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/6b3488e698329b5bcd03e1c1105da010/duviv.pdfIn PDF document text
    • http://kleinschaden.expert/userfiles/file/59031110329.pdfIn PDF document text
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/198f02848b181800727c1034d955e5b8/54325324911.pdfIn PDF document text
    • https://www.vbclighting.com/wp-content/plugins/super-forms/uploads/php/files/94e7385f50d8b23633a872de0b1289c3/55799295816.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af073a45e58---71652180964.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=d%26d+5th+edition+races+and+classesPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001183d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1183D 9076 bytes
SHA-256: f695977626623e59fedb2fbedebd468d0acf89ff6f6ceafeb3cee4351ddee6c8
font_01_sfnt_off00012add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ADD 16524 bytes
SHA-256: 95c6a76f65060fdcc0ff81f36b6e9bf254fca0fd7171ddb398f3bb76b1187332
font_02_sfnt_off00014213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14213 1848 bytes
SHA-256: 4bf6fae695098e11d1b110121f1b6459c80d9d34ce7957022d94e47ca10e81b7
font_03_sfnt_off00014ab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AB0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_04_sfnt_off000162c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162C2 58968 bytes
SHA-256: 5c3fb8a12c6eb234b4d71199cddf38c98f62099e2387afe40de8c04135c26e6e

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