Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e0481f6310ae1e…

MALICIOUS

PDF

84.1 KB Created: 2021-07-05 05:31:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 01796c834ffced395bb5ab8bdb03d014 SHA-1: dd60e5cb82bdf3a92703ef364fc1c3e4f1b1b92f SHA-256: 02e0481f6310ae1e5e764f5499775bb0f91152467c307078dcb6b1957c55bccc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a phishing or malware distribution attempt. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' further supports this assessment. No scripts were extracted, but the overall structure and URL patterns indicate a phishing lure designed to trick users into downloading malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://wastran.ru/uplcv?utm_term=download+driver+booster+7.5
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b4e67b369---tuturisi.pdf
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/0rqeor3npnj2lc3qn987ddbdk2/53819741732.pdf
    • http://japan-railpass.info/images/blog//file/5999098839.pdf
    • http://odpadykj.cz/UserFiles/File/kilifamulijo.pdf
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607d9b1cd6232---35205059812.pdf
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a36357b12e9---zikep.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/uvlov2t0b50oo828uc387cisd0/vakejejukitiganovuxide.pdf
    • http://lamelove-zakryti.cz/userfiles/file/27840677220.pdf
    • http://aelma.com/sites/default/userfiles/file/11107094628.pdf
    • http://x04ydivan.ru/userfiles/file/botetojolelegexojaz.pdf
    • http://alemotta.com/resources/original/file/diwuxoramafin.pdf
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/6e551b18e1735662eea0c41ca7879319/24989091514.pdf
    • http://parkhigh65.com/clients/4970/File/24214300677.pdf
    • http://yuc-fac.com/uploadfiles/20210701175041.pdf
    • http://bazis-expertiza.ru/ckfinder/core/connector/php/files/20111747018.pdf
    • https://centrorevisionimonregalese.it/file/soxolebuwuxe.pdf
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/cb6e91cd193a8014d309ab5c20d3d311/ranezuxu.pdf
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/16070bc3511e3d---ganibumiditagebi.pdf
    • https://srldirect.com/ckfinder/userfiles/files/pisugo.pdf
    • http://abwfinlay.com/uploads/files/tasemujefelizibef.pdf
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160abfcbe10604---funakudamaleni.pdf
    • https://ijpdua.com/contents//files/pitifesujepapefevi.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_off0000e6d1.bin
413f91ca3c2aecbf658421b90e6d17c2f7c9fda3e5d9716d9103d88cf3f2016e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D1 10784 bytes
font_01_sfnt_off0000ffe4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE4 16792 bytes
font_02_sfnt_off000117f6.bin
a2f4df81481176b16d67d921a690b6627855f6c17d6d2d842c3d7c889b5d84b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x117F6 16944 bytes