Malicious PDF — malware analysis report

Static analysis result for SHA-256 30273abf974f8d87…

MALICIOUS

PDF

89.5 KB Created: 2021-06-27 03:30:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 3a7e6d10ce6e97e1b311560d170a28db SHA-1: 300a8ea7ad77f020b34a9772b6906a8b5e65d179 SHA-256: 30273abf974f8d87467947e724bb8faa3cf3915fc0378272e920331608a442de
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to compromised websites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The file's structure and embedded links are consistent with a campaign to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • 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.
  • 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://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a8cac6518de---xopepawafumugixi.pdf In PDF document text
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/b1j73okliltt0qn234iu3nfbqv/tomifodedisujabulixizon.pdfIn PDF document text
    • http://www.abcklima.hu//data/editorfile/kagosizafuge.pdfIn PDF document text
    • https://abe-rdc.com/userfiles/file/31167469227.pdfIn PDF document text
    • http://vinmexindia.com/uploads/78081510814.pdfIn PDF document text
    • http://dzbnf.com/upload/file///vifolus.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/3770d9c3d4db1d65a7bd4a7fe2fb3b5b/34332335473.pdfIn PDF document text
    • http://pettwayfamilyreunion.com/clients/39389/File/25820936.pdfIn PDF document text
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/741d96fa7c25d56e05f5b31347b0b2ad/11972799856.pdfIn PDF document text
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/39390147752.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/ejiirf1rbtksqq503rlgd6pq4l/zomekixedewexotilix.pdfIn PDF document text
    • http://findmecakes.com/userfiles/files/tosigena.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/0608cb23e5e19ae1eb3617c43f1c4db0/11249818166.pdfIn PDF document text
    • http://anpo.vn/upload/files/jojaw.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ca17529660d---xojoveviweg.pdfIn PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160822a5b67cf9---zuzivigegelonosarid.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c09f977df09---xizudeven.pdfIn PDF document text
    • http://thepdaitruongphat.com/upload/ck/files/xabuvori.pdfIn PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/8fe76bcd82ec37902926b107fe76920e/lomatokijofalavurapi.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/17618925141.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087a5d6666c2---58681593673.pdfIn PDF document text
    • http://beateromer.com/bilder/file/benezawejidezavalinez.pdfIn PDF document text
    • http://amuseonline.com/absite/userfiles/file/koresegej.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/3d927b2b7c49087433791e2c35558142/68292420331.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a819891d67d---84069289349.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+to+change+color+of+pdf+backgroundPDF 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_off0000fa3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3A 11048 bytes
SHA-256: 002437910945b3cb7c730cc83e2fa4975c18649b2a7c14f4391006d0d9ff5770
font_01_sfnt_off0001137d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1137D 17196 bytes
SHA-256: 4bcd1d8521448cdf49788d30cb0c3029294a45848abca069b880a716c868967c
font_02_sfnt_off00014097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14097 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1