Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee97f1f8be64386…

MALICIOUS

PDF

100.2 KB Created: 2021-07-04 07:52:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 08eafc7e4007466eeaf8ebf6142b24fa SHA-1: e21fa9ad0f183ee611f9d3f5090a3d1d44b90a37 SHA-256: bee97f1f8be64386c1d17cc353705fbc699ae24e7849e6d1a17c78907443f9c1
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to compromised WordPress sites acting as hosting for further malicious documents. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to phishing or malware download sites. The presence of multiple compromised CMS upload links suggests a coordinated effort to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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 https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/499a0aebaed7e36ce83735d68f816f8a/muvepidagonutavebopaxixo.pdf In PDF document text
    • http://ampletrekking.com/userfiles/file/tetimumasunug.pdfIn PDF document text
    • http://asiadomainstore.com/userfiles/file/94729091056.pdfIn PDF document text
    • https://thefencedocumentary.com/adminfiles/file/55843382795.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080471218748---girotabufubeje.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/02cf45cf6e6dbcff6ef6155b36a87a48/sisibujiforodeteda.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ffa8d996c5---mirixuxorepujitilibep.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/d8d65639f480b2b6dea1dd284f421f58/pisafis.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/160838a7bc303a---67850540160.pdfIn PDF document text
    • http://globeksa.com/ckfinder/userfiles/files/37047932895.pdfIn PDF document text
    • https://beauti-full.ru/uploads/files/mivetejukit.pdfIn PDF document text
    • http://technology-mp.it/userfiles/files/nafifobudogiremulixupil.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a0c993b5a9---xiwawolumebut.pdfIn PDF document text
    • http://geometrabottero.it/userfiles/files/57037034303.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/hfeajlghqovja0ra0uii3eobis/fubojizi.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c0b10b179bb---71949943756.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/f8198a241a6c61081f2576ece282e7f7/jarexit.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160913eb231297---4674334425.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/e67661f3e7d6239f55cb02cc00725260/koxevutikenotaxi.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c318716680---15506360535.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=approximants+in+phoneticsPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF785 23096 bytes
SHA-256: cb86e221db765f7ca7f40066f4fab850e5c9436d986c1cc6d6f2b2c0d8fe154c
font_01_sfnt_off000133b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133B0 2192 bytes
SHA-256: b47437782b8456ade80b2e4301a3b2b827d8df29da26be18a330dc60f32296a7
font_02_sfnt_off00013d79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D79 16076 bytes
SHA-256: b79b5b783f9f2750fb1a468c37c2e1239a95587a9898e49e55e45fafda568ad2
font_03_sfnt_off00015298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15298 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_04_sfnt_off00016aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16AAF 10676 bytes
SHA-256: 47b6ddbba0fc0b77fdc655c52b920a327225e5905c67eb1f08d4daa096891f70

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