Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0729da1a46c8544…

MALICIOUS

PDF

86.3 KB Created: 2021-09-17 06:11:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 370cc1a9bd9e93fefb848242bfcdf0df SHA-1: 5d31394535d266c21af4211490429f1e51885037 SHA-256: d0729da1a46c8544757791057e0c1ef86da20775d24e7cea640c36d6ba04d21f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to domains that appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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
  • 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://hitecds.com/userfiles/file/fakipugitiwabebikak.pdf
    • https://funbugs.ie/userfiles/file/vovopolozawosedinatareni.pdf
    • http://holdemigny.fr/ckfinder/userfiles/files/nokofabalumole.pdf
    • http://poketomecam.com/uploads/files/18962505100.pdf
    • https://thinkglobalcompliance.com/ckfinder/userfiles/files/nipilenav.pdf
    • https://monyetjoget.com/contents/files/sudafowovavenokigakatev.pdf
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16142655d47065---gukokesixekaribatanif.pdf
    • https://ccaquebec.com/userupload/files/todifinem.pdf
    • https://divinenine.net/userfiles/file/pavufibotuxexesiv.pdf
    • http://studiotecnicomaglio.it/userfiles/files/xinikavareko.pdf
    • http://otohondamientay.com/upload/files/89128651241.pdf
    • http://royalgoodviewresort.com/Uploads/file/xejisudutaz.pdf
    • https://jagamimpi.org/contents/files/dabulefob.pdf
    • http://eventologia.com/userfiles/files/37907393539.pdf
    • http://tuyothuyluc.vn/webroot/img/files/37550737684.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1612edb726bd55---nuvapaxotufon.pdf
    • http://laboratoriologos.it/userfiles/files/lakavujaxirosak.pdf
    • http://nationalcoopadvisors.com/userfiles/files/sejosoniviru.pdf
    • https://tktravelkorea.com/FileData/ckfinder/files/20210916_964073DB6F190FBD.pdf
    • http://kite-surf.sk/files/bulokoxelokosotomo.pdf
    • https://fedico.ca/upload/editor/file/3704978815.pdf
    • http://www.sport-konyv.hu/userfiles/file/rawakegomisifowiniroto.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=year+5+reading+comprehension+test+pdf
    • 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_off0000ee32.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE32 16792 bytes
font_01_sfnt_off00010644.bin
dc2c555512b5a19b4dc209788afa7c66f40eb7c4bcf3ead06b577b2ce20fafdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10644 17220 bytes
font_02_sfnt_off00013204.bin
eee30bb70d4634476edcb5010628755ec8922f385c07779895d27c6aae547fff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13204 11136 bytes

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