Malicious PDF — malware analysis report

Static analysis result for SHA-256 e30f300b226b3628…

MALICIOUS

PDF

228.1 KB Created: 2021-07-04 15:49:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 047e63dc06ba88b0bfcf7167fea386fc SHA-1: 0f47c322d79f5fd8b8c4a3283faf0fbb16e14d74 SHA-256: e30f300b226b36287bdfba828dda92cb737828e975c08c5c50bdc6295c7799c2
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content or phishing pages. While no scripts were explicitly extracted, the nature of the embedded URLs and the detection as a trojan indicate a high likelihood of malicious intent, possibly involving the download of further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9774

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://huntic.ru/uplcv?utm_term=runescape+fungal+mage
    • http://morgancountyoh.com/userimages/85904740996.pdf
    • http://grodgolf.com/clients/f/fd/fd83fa7079552abb47853a85229f74c1/File/30886840224.pdf
    • http://ed-web.cz/userfilesfile/redugepaxoxivipime.pdf
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/86c2b1403be825e574eec378e320f448/71894166660.pdf
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086b93d58bc0---tidapodotamizodixejalole.pdf
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/4838128b72b87826f23137932aaa82a5/xuwewejarevurovofova.pdf
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/9003823d8d36fcd35d8156e5b5c7ed14/99156972509.pdf
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160853acb44b85---sivujepigebinusinuvux.pdf
    • http://arcenevents.nl/site/upload/files/papafemafalalosekij.pdf
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/160886c975e866---bodabosewizepav.pdf
    • https://abugfreemind.com/userfiles/file/metofelugorubonixorik.pdf
    • https://patriciobanados.cl/upload/file/
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a0ac543e3a1---75586954884.pdf
    • http://burfel.ru/upfiles/files/runagenurowezofadexegapuj.pdf
    • http://easyreturn.store/userfiles/file/83787837644.pdf
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160962eb306f1e---36279538749.pdf
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7e6d7acdfc---90789599133.pdf
    • https://ajitcoatings.com/uploads/58956541128.pdf
    • http://archerelectricsupply.com/userfiles/file/tuxiterejoferu.pdf
    • http://dynamic1984.com/user_file/file/jugolelanilezagiwum.pdf
    • https://whitesal.com/data/images/file/5808_20210609202906.pdf
    • http://altadirezione-consulting.it/userfiles/files/80768566853.pdf
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/dda9cdb677291d2fa8803067c5d2b718/sofuxubexidawatizinu.pdf
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/d90b800a65320f551f8ea3a256ca9e06/kenif.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000306ba.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x306BA 16792 bytes
font_01_sfnt_off00031ed1.bin
a1a4b5780d9466a1472c0772df879d7a98f4fb2cf5e62770f36442ae68f1a63f
pdf-font-stream PDF embedded font (sfnt) at offset 0x31ED1 10560 bytes
font_02_sfnt_off000336e6.bin
f54750d0810f1390c48bbefe19f677b93652716c0a97f836079daafcef568a46
pdf-font-stream PDF embedded font (sfnt) at offset 0x336E6 17000 bytes
font_03_sfnt_off0003637d.bin
9c68207efa4b77a94aba498572419d7b2e02a9e9d2006868d0cb835ed25e30e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x3637D 19868 bytes