Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1d76ea8d7684d6…

MALICIOUS

PDF

77.5 KB Created: 2021-07-05 19:51:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 12155d9fec7c04c226191e7bcd021ba3 SHA-1: 9e729f29d4b0ba5385d1784a2752fcc1248c285a SHA-256: 2f1d76ea8d7684d6ec3ac6ef53089b6750e0b60339142b83769e3870c679b41c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV and exhibits characteristics of a phishing lure. It contains numerous links pointing to external websites, many of which are hosted on disposable domains or compromised CMS upload storage, suggesting an attempt to redirect users to malicious content. The PDF structure and embedded links are consistent with techniques used to distribute phishing content or download further malware.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2855

Heuristics 5

  • 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
  • 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://medvor.ru/uplcv?utm_term=excessive+hair+in+women PDF link annotation
    • http://mstreatmentadvances.com/userfiles/files/52335802443.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608e1eb6d265d---sorewufovevofaf.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160adada17ad28---detoke.pdfIn PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bebb4431724---kizomik.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160829ee1a9adc---21870747573.pdfIn PDF document text
    • https://rugsinc.in/UserFiles/files/daxemizulizesegozow.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9d42b0719---rabive.pdfIn PDF document text
    • http://954move.com/clients/4890/File/21861502028.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/j9cg2d8pb91om92ppt6kagi0f1/38508187526.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/a1c6ddc74d3b3517e60e7a15fe5920c9/xadazasovolodo.pdfIn PDF document text
    • https://pacpartner.net/images_client//imagesfile/27744447722.pdfIn PDF document text
    • https://catbasailing.com/upload/fck/file/xapebu.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/36110905161.pdfIn PDF document text
    • http://deltastal.ru/userfiles/file/8847658148.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/392620c2ab4f2c0287d290cf295cfdf3/76265867425.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/160893a883d2d6---49937844268.pdfIn PDF document text
    • https://tucarrorentacar.co/ckfinder/userfiles/files/ligek.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6cc4b963a---98173736792.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/801bb6a0bd57bfd6816dcaed5800f2c8/fidowusafisuwoxujot.pdfIn PDF document text
    • http://tutek.eu/userfiles/file/pexinizupitaxafe.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074010dd954f---rogakiwuxiku.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/f5e1871087e851340e7d0d6df0ca328a/vokafeburulurezawixadafe.pdfIn PDF document text
    • http://hobbstownis100.com/clients/6/66/66141d04a4341350d76ae3a38785cb5a/File/puluzoxize.pdfIn PDF document text
    • http://au-coeur-du-temps.com/userfiles/file/15266888485.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/4dptc1vrksqbnnbg6pjkkfs627/wotiv.pdfIn PDF document text
    • http://bocghebinhduong.com/media/ftp/file/13241504274.pdfIn PDF document text
    • http://s292376414.onlinehome.fr/datas/imgmail/file/penumugunosomu.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1D 16420 bytes
SHA-256: 5b127abc98f395761f14c49bc94dda29fc029d73ef278600746de255f931c4f9
font_01_sfnt_off000118ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118BA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1