Malicious PDF — malware analysis report

Static analysis result for SHA-256 e06bbd00e1f1dfc4…

MALICIOUS

PDF

138.8 KB Created: 2021-06-26 05:25:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 90fbc32c376b9ac9f910a6c6c59b3106 SHA-1: 49e6565ed35fd4977238532cea0ddbe551d1c9ea SHA-256: e06bbd00e1f1dfc4bc4af8ff425af81f4030e71a1ac4c580a6864aa5e5b8015a
124 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous domains, many of which are hosted on compromised WordPress sites or disposable hosting. ClamAV identified this file as 'Pdf.Phishing.Trojan', indicating a malicious intent to lure users to potentially harmful websites. The presence of multiple distinct hosts and the use of 'utm_term' parameters suggest an attempt to manipulate search engine results or disguise the malicious nature of the links.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4463

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://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/5gj84qblksjt8e20c9nercg8gj/46171495800.pdf In PDF document text
    • https://nepalimodelagency.com/userfiles/file/zebokuronomujelaxavefof.pdfIn PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/5719352d585af8dd2e1c8f269badd569/60396629992.pdfIn PDF document text
    • https://bakwanudang.com/contents//files/lagaloku.pdfIn PDF document text
    • http://brainbond.ro/userfiles/file/76939117004.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/shm9rvh0a5c6hjomv01m907kts/86744848960.pdfIn PDF document text
    • http://ergo-logo-bamberg.de/userfiles/file/jefotedamepalujugol.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c43e1744c1b---xaxivoxokigowat.pdfIn PDF document text
    • https://equator-maritime.com/userfiles/file/47951150002.pdfIn PDF document text
    • http://df-foundry.net/d/files/88695327440.pdfIn PDF document text
    • http://abnicum.com/files/file/mekufuvofutosefot.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/605f563d112284515ec570d133939fdf/zoxadoxobikozedew.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/16955932d74e114f013056d4bfe30473/69270272804.pdfIn PDF document text
    • http://alpanelektrik.com/depo/sayfaresim/file/55646052014.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606df7179cc38---xifuguribumoligo.pdfIn PDF document text
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/9f621494f505d9b8a728331b2b0324af/83450259730.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a995658d66b---kabidusaxebikenalanamebok.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160bf57787d195---17036673787.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/236e05or2o3vvk3rdda50tsf95/55383302564.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/9600e06ed31b50cf161fc7885f46139b/zunilibetak.pdfIn PDF document text
    • http://cherriestattoo.com/ckfinder/userfiles/files/bijajobadapas.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/62443e70e13298c821e5eb29ba29775f/41131234937.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/71045bb820781c5df6e8dbbe4e9f69de/49916622768.pdfIn PDF document text
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/6dfc784499aaa53214c1ceb81b3397b8/97040775050.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=about+the+abdul+kalamPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001d2e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D2E2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001eaf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EAF9 10364 bytes
SHA-256: b3de9bd6a5b0352cc79802c43c4ee45fc222673dbf7195367f4e3402b9f4b8d3
font_02_sfnt_off0002026b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2026B 18348 bytes
SHA-256: 3ec3d8bd7e04004738e0557cf23f4e016c625c7360db52228022c09af1109ba2