Malicious PDF — malware analysis report

Static analysis result for SHA-256 adbd85cbc2b7cdad…

MALICIOUS

PDF

86.7 KB Created: 2021-06-27 20:14:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5a19b35d82b6f96bd0b1252e732b9fce SHA-1: e6c12801c0b53d828e30d965ad667f0dbc47ebbd SHA-256: adbd85cbc2b7cdadf4eebf15a3e0bf85f7089d17c3f983d079e36b57dcb19ed0
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to compromised CMS uploads, indicating a link farm designed to redirect users to potentially malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/c9175a84a8728eb22a7f1a7660c93b4e/remubekuwejoj.pdf
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/160722c4e6daab---48146672010.pdf
    • https://chmelo.hu/sites/default/files/file/82027486818.pdf
    • http://marcus-1.com/FileData/ckfinder/files/20210626_2DB41723771D6E38.pdf
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5d7413db69---lutosejuzanuvam.pdf
    • https://amenajarisiconstructii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160762b68de349---55060470032.pdf
    • https://bawwabatrizq.com/userfiles/file/4718356259.pdf
    • https://yellowstonewildlife.com/dotikerurugiza.pdf
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/1967907b712dc50502ed63b611bc8031/48490141445.pdf
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16078e7a5d56f6---62183926520.pdf
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090d291c61e1---mufifavomojivafukofe.pdf
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef3aea182e---rupebanosigujizugaf.pdf
    • https://iva-vietnam.com/userfiles/file/foxiwenedumixode.pdf
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160954475e853a---73956170121.pdf
    • http://fields-on-earth.com/sapumumaxogojivomugezovu.pdf
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a497ae420ac---xumeje.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=90%27s+music+quiz+questions
    • 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_off0000ed54.bin
bbaaeba1f1cfde51fa2780c0a37eca23b51717d76b6097e3c3efa5d4056908b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED54 17864 bytes
font_01_sfnt_off00011c5b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C5B 16792 bytes
font_02_sfnt_off00013472.bin
244799cc6ad031e3f3eaaa284ffb5ee579213c999ab0bd05fc6c5236980aca16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13472 10616 bytes

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