Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5e11b69f7d86a4f…

MALICIOUS

PDF

277.5 KB Created: 2021-06-25 12:06:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 93a2b0703a775430d098f322ae749f1c SHA-1: 408ec8eb8269af3adc8b15a6644dafc9686edc16 SHA-256: e5e11b69f7d86a4fa465232d3eae9e6327f9c3301a3ae735156f34ea9c2902e9
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple compromised WordPress sites, likely intended to host malicious files. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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.
  • 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://donghozibistore.com/luutru/files/vakimemotukikix.pdf
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a47c29172c6---galerib.pdf
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160c0397e137a8---venexukewele.pdf
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/v8itas4h2ro33be7hfravnvcs1/95308217303.pdf
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/7sv7n2rucq8ci8kp4gdfvfki9u/kutaxomogos.pdf
    • https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/f27b9a4065d7e834654bfd4a4a38b936/sogutes.pdf
    • http://firanywiktoria.pl/uploads/editor/file/nafixarojudamosu.pdf
    • http://holidayinntorino.com/userfiles/files/1430705189.pdf
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608ec9fd5c455---15818250800.pdf
    • https://al-farh-iq.com/upload/userfiles/file/xoxaseserodefunuduravedom.pdf
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfca5059d25---kikajesirunagapaxirivu.pdf
    • https://vmwarts.com/ecovic/file/55704723831.pdf
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085200ea1fdf---95053485117.pdf
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/gvl1jadh3hikuq1rvr0825ql32/68731036609.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=carl+jung+two+essays+on+analytical+psychology+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_off0003e731.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3E731 16792 bytes
font_01_sfnt_off0003ff43.bin
fc7b617df8f3dcf864fac32718dae2032384e2b6dbb3b28e0ff1a1c4aa1f4734		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3FF43 18100 bytes
font_02_sfnt_off00042d77.bin
64b05c31f204aecb058be3ef63a929821a7a66f37a7bd4045128015015687502		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42D77 11360 bytes

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