Malicious PDF — malware analysis report

Static analysis result for SHA-256 f015015506ef973c…

MALICIOUS

PDF

73.1 KB Created: 2021-06-25 15:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eacad62eef58d01799c3aeab86a98b74 SHA-1: 5e09fb306889440c08190e3a6b0fb1a034d42956 SHA-256: f015015506ef973cdbe8da0a471469776fda623383b51c880465a8617bb2e792
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised websites or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest a phishing or malware distribution intent. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 http://mrsinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/kaganavoneg.pdf
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7b070f41f2471c62c49afbe0ca8b68d4/nudonagisifusimabite.pdf
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/6ac9a4a83d774ca167e4e5f7762d36b1/gidolutuneloxaw.pdf
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160ba0cce6506e---mafapasafaloj.pdf
    • http://zaragozalawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/72065061945.pdf
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/08oq50s2caeii5psriqh032j06/boketiziwin.pdf
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/ba64665270145f4bfc0a41a913e528cc/23353094567.pdf
    • http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/likuwuvap.pdf
    • https://www.sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/16099e320e2f5f---59354028892.pdf
    • http://billsky.ee/files/file/davofanofabo.pdf
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/1cf3b3b3e43e7ce786a03725e8941ac8/29826336076.pdf
    • http://cepsagibyachtfuels.com/images/photos/porimi.pdf
    • http://villa-carlshorst.de/sites/default/files/file/25215559979.pdf
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608bc90dddf51---1091797897.pdf
    • http://teechart.com/uploads/images/files/69150388029.pdf
    • http://pwr-tech.ru/userfiles/file/mudadizojidupom.pdf
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/d7ffbd5992247735af179a25c15f5db5/94862097786.pdf
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d3b6f8c6146---fabekid.pdf
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a729092b4---7466514419.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=abase+meaning+in+bengali
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd2f.bin
a86bcadd18638d2fbe03dd6fdd4d6594051bdfbcce2b7519cd60561c2e454c1d
pdf-font-stream PDF embedded font (sfnt) at offset 0xBD2F 10256 bytes
font_01_sfnt_off0000d432.bin
9e8d09ced9e3043c1fa6a90b1e2e1aebc74b85146f4660b6a0bdd93cef5c19bd
pdf-font-stream PDF embedded font (sfnt) at offset 0xD432 16544 bytes
font_02_sfnt_off0000ff86.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF86 16792 bytes