Malicious PDF — malware analysis report

Static analysis result for SHA-256 6000893b98692aa8…

MALICIOUS

PDF

59.8 KB Created: 2021-09-17 07:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bd233adbb9ddd1cbd74e676e6fab36e4 SHA-1: e1c1cd46ba6077e9b1462f7d1291e0710f6acf6c SHA-256: 6000893b98692aa84447f6f9903a92d1a77a3709b86636a5a52c743dadcc3db3
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting. These links likely lead to phishing pages or further malware downloads, indicating a malicious intent to lure users to unsafe content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6048

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 http://elesi.eu/fichiers/files/99755020414.pdf
    • http://elitakhealing.com/ckfinder/userfiles/files/29059521148.pdf
    • http://frankslawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tikepu.pdf
    • http://purofirstli.com/userfiles/files/23314796234.pdf
    • https://portalbime.com/UploadedFiles/New/file/mibizovekizizipud.pdf
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161411094e3616---14004659444.pdf
    • https://learningsolution.ca/userfiles/files/lezijatuxinorakevizovukan.pdf
    • https://igescanada.com/ckfinder/userfiles/files/90004263917.pdf
    • https://al-wesam.com/userfiles/files/vubinapufuwurisixevuxusow.pdf
    • https://bak.vn/upload/files/pobidenuvekedosif.pdf
    • http://freehajjandumrah.com/admin/admin/uploadfiles/file/tilavaparukisipotobujik.pdf
    • http://aaronandanthony.com/userfiles/files/57930565138.pdf
    • http://solarissoft.com/img/userfiles/files/puropogonopuzizubifizabe.pdf
    • https://congthuonghotel.vn/app/webroot/files/images/pages/files/guromigesimisunuzifufi.pdf
    • http://westernstudioservice.com/admin/userfiles/file/dakipobatifirija.pdf
    • https://garnizone.com/userfiles/file/49436900321.pdf
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/161405e102caaa---dejuzapamugil.pdf
    • https://sukienmiennam.com/userupload/files/98395325876.pdf
    • https://aneri12.eu/res/file/ronowe.pdf
    • http://emblem4home.com/UserFiles/Member/File/988321117.pdf
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/16140fb3824537---tetezaratunopurekonaguv.pdf
    • https://k31szmq42-nu28.com/contents/files/pajijujefinizotubenodofo.pdf
    • http://consoles-a-gagner.com/fckeditor/userfiles/file/16482530725.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=prokaryotic+vs+eukaryotic+organisms
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be6b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xBE6B 16792 bytes
font_01_sfnt_off0000d682.bin
5e14606e71d762bb54a72d9063aa472da249cc5d22ad84a54c34fbde87cd9485
pdf-font-stream PDF embedded font (sfnt) at offset 0xD682 10900 bytes