Malicious PDF — malware analysis report

Static analysis result for SHA-256 c540ff77f7511721…

MALICIOUS

PDF

92.8 KB Created: 2021-06-19 14:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: bda9680e664bc3bfb42eceacd62aa868 SHA-1: a92a706bc9e200506e6699ce7fe5f161fd080863 SHA-256: c540ff77f751172199b4bd8d1b1dd964ad91bf688e6a3769f11cf0ed384133cd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure for downloading a 'wifi hacker' tool, which is a common social engineering tactic. It embeds numerous links to compromised WordPress sites and disposable hosting, suggesting an attempt to distribute malware or phishing content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8892

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://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/a9514bf3c20d2a0e74f9ad6fd3b63dfd/fafowobadada.pdf In PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b16f4614c66---kiliguvelojizexuxufixenig.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078a220d3652---28308940199.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16080d8f55120a---fijuj.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/n709tgeq3909i6jh8uo4k3q565/77504110001.pdfIn PDF document text
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/3443b52d66f7f782fab2c59b862df832/32640215270.pdfIn PDF document text
    • https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/8143785e3f83b345e121b6bb84610b3a/85825193773.pdfIn PDF document text
    • http://muszempilla.com/files/file/pofosuro.pdfIn PDF document text
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/e7879b5fafe6d0073f24027d116c025f/jogagumositetosizotib.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a44144a35ad---pudir.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160943e67cd0f4---68848431537.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/sesuwokonef.pdfIn PDF document text
    • http://healthywithhart.com/res/file/zetuxituterivimututibe.pdfIn PDF document text
    • http://seoulmenu.com/uploads/files/rikil.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16084754b48504---69392088019.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/88923813875.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=download+jumpstart+wifi+hacker+for+windows+10PDF link annotation
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001093c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093C 6744 bytes
SHA-256: b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808
font_01_sfnt_off00011a21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A21 5704 bytes
SHA-256: 2526a10f13cf0a0126daf83a4a183a47e1985ca0d7210d1186f0b291ff4e0e03
font_02_sfnt_off00012d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D6E 2344 bytes
SHA-256: 91ec1a1e4a0197a0fa951def265dfc6e46555dc9b240d7f9779dc081a0c1cfff
font_03_sfnt_off000137b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137B4 29920 bytes
SHA-256: 0eaa60c42ba24e8d4ce95221f615018d72b7fe500ccb5a8cf4365153f6e49ddc

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