Malicious PDF — malware analysis report

Static analysis result for SHA-256 0680d733cf9054ee…

MALICIOUS

PDF

92.6 KB Created: 2021-07-01 16:43:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: ced330b61a00d0f41bc979ddca5d2f21 SHA-1: 41dad33c8966f7b2d2e7eeff53d88b9b0aa9089d SHA-256: 0680d733cf9054ee109c51557e82672d7fb0ecbd1f3ea78e7f2be6006f8cb5cc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm directing users to multiple external URLs, with several hosted on compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16094cde0bc9e3---57630785242.pdf In PDF document text
    • https://annjulieskarpmo.com/userfiles/file/vurafogififi.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b98f279ef3b---bikobalifupefumajubiz.pdfIn PDF document text
    • https://castilloexterior.org/ckfinder/userfiles/files/ritenirila.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16083aac0e2388---gagopur.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/ridolafoxip.pdfIn PDF document text
    • https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160813366a551e---filixagola.pdfIn PDF document text
    • http://outspokenholland.com/userfiles/fckFile/20210608163159.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1606eae3fcbb9c---44199476064.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/407b0fd5049ccc812b1f23b87854aaee/luzegawi.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160882eb634a77---kolenizelidajifizet.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/dusog.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1608aaa1a0c4aa---11961477447.pdfIn PDF document text
    • http://svsteinfurth.de/radsportfiles/file/vilovumivinufabe.pdfIn PDF document text
    • http://laiyi-art.com/userfiles/file/wufexafopifumofiratosaxu.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/da8ff77cf71b8e81269eb937e02888a4/12690446246.pdfIn PDF document text
    • http://hidra.it/ckfinder/userfiles/files/39912517100.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/b9eeb7dc7d4bbc38cbb399a519e322db/kugosuwatozewugukam.pdfIn PDF document text
    • http://www.asslar.de/downloads/lenetorusew.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607db07f2543d---mamujitovumapa.pdfIn PDF document text
    • https://fibaquitaine.fr/cebatrama/userfiles/files/toramozenomezolaliratun.pdfIn PDF document text
    • https://austarpharma.com/upload/files/kagenakajoperasurazanaga.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=borges+brodie%27s+reportPDF 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_off00010726.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10726 10484 bytes
SHA-256: bfe651a59ebd86cfcb7adaa96d8d8cdc66fb9ecf74f332d52529040651b9a79a
font_01_sfnt_off00011eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EB6 17508 bytes
SHA-256: 05e5d9c7c84d3ee54e8620327851e5e9d2218cc69cef7a3fa0346a4e23adb1f7
font_02_sfnt_off00014bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BFE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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