Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fac30464f470ead…

MALICIOUS

PDF

87.3 KB Created: 2021-07-21 22:55:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: f64b9eab96bd1e6e57b5170a09ccbe47 SHA-1: 0476c115a5cf4141a23696b4eaae601b0c50fb95 SHA-256: 0fac30464f470eadde4dc6c5b5602e4a38cd77459a41a2bfbefb8de588a17710
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many of which point to compromised WordPress upload directories, indicating a link farm designed to redirect users to potentially malicious content. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the structure and URL patterns suggest a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • 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 http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/60cl1bttqeebom39gf8sca3434/90400263773.pdf In PDF document text
    • http://africareview.in/userfiles/file/zidikurufenibagif.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0ec440ba23---44227008464.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/0127bb5ce6d03bf3486f329d942e1748/kamawejekapidimiloj.pdfIn PDF document text
    • https://electrabicycles.pl/app/webroot/uploads/file/16202772765784.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/qa7vfqf593pgvd9a3hqru5qj0r/7615383609.pdfIn PDF document text
    • https://www.stjohnhomelessshelter.org/wp-content/plugins/super-forms/uploads/php/files/f104a3bc551ce531fd0b4b9338ac1b99/74022386724.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b87472e4e1c---kamuvomezanubolajomaduw.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/bb4288c551588469b55594ddaff6f7c9/sizenadita.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e5a3889e4c---95906790361.pdfIn PDF document text
    • https://10glazsikeyrosa.ru/file/ripifafube.pdfIn PDF document text
    • https://safrano.pl/userfiles/file/25286593352.pdfIn PDF document text
    • http://bjzjygj.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/zezopiwenadevupitufizij.pdfIn PDF document text
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/40afdb3137d6069b29918b4f7a12dd87/11273193613.pdfIn PDF document text
    • https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/ffu0bq7tkt46f0h8nlks87kvth/81655535889.pdfIn PDF document text
    • https://pousadamarazul.tur.br/wp-content/plugins/formcraft/file-upload/server/content/files/160810efdc8973---38621504340.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/97199388115.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d32f3b54e0e---vifasa.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c4a4e6cee6---60916565434.pdfIn PDF document text
    • https://barrierball.cl/ckfinder/userfiles/files/podasipewarixebonu.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085f150b43e5---kebugogomibilawi.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/7e59db14366618c9e561f5a924ce4e19/33821263237.pdfIn PDF document text
    • http://bogelaipigeon.com/upload/file/52134459828.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16082f7ff07609---wifuten.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/e82f93cc4814cd55196a774c3388123a/63228760674.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=roan+shire+horsePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF469 10104 bytes
SHA-256: e07125d76b97245b0005c9f8530fe4975ae9065cdca961b9829ab185a8643249
font_01_sfnt_off00010adb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADB 17028 bytes
SHA-256: 9b7b95e6f24b51757f6ab938b4a25831788ad2480a0bc662c968b805c528f0fc
font_02_sfnt_off00013797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13797 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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