Malicious PDF — malware analysis report

Static analysis result for SHA-256 7263b40369758105…

MALICIOUS

PDF

72.2 KB Created: 2021-05-03 23:07:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a52126634a3fffc33200d91c2681401a SHA-1: 39ecaa4898f03ba85cd5968b534bc002944b7d63 SHA-256: 7263b40369758105a12f894c23b42598998b78d2aa85c4a45df8f182c8cb99f1
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 WordPress upload directories, indicating a link farm designed to host malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/160775b05f024f---gotezejevekez.pdf
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/41ob23rir50tn6p95ucr6mtq1vimdsrt/16339623870.pdf
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073034bc263b---50467209446.pdf
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a9d2c423574f7e594a086840c1004759/kimaguwokuvevilu.pdf
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606d374d4fb20---lazalupolegunopimuk.pdf
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/f6a918ad24adb69c2b87bf5106447c9c/toselepevix.pdf
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/16079d7627c424---14072532255.pdf
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/16083376b88ab7---sigajolasopajet.pdf
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a8f086ece---59203486959.pdf
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/36dc7e4f8e7f60e4ab56174ce3e042bb/14387766810.pdf
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/48efa1bc23e52dae6de5f245ad6ba521/53646208609.pdf
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/sb49cnlupm9lqvd60lqs4clg25/joxerabolipexowulu.pdf
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/805b39f675623000510d826fa0f2533e/84508054241.pdf
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/01ffc2682ce80b6fc00fb7f4b9fdf316/21625157958.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=gyprock+ceiling+sheet+thickness
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d411.bin
49677c5ba6c2adf8defc231e8454c2ece872af1c4e867b7656a6835068e30c64		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD411 4968 bytes
font_01_sfnt_off0000e502.bin
55ba55759b08ad17a414381bf966fc87a7f4ea98e7f5c3f6b7e958feb8478e7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE502 11420 bytes
font_02_sfnt_off00010b87.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B87 4324 bytes

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