Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a0f3759ed745000…

MALICIOUS

PDF

71.1 KB Created: 2021-09-08 07:56:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b020c9fe32f4ae5d7fcc63b87341665d SHA-1: 9d1c4598ecd46eb395e75e46228b518332c942f1 SHA-256: 0a0f3759ed74500003c09c7d77e941bf87cd350037cce04d13c830a383fd6473
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to compromised websites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of a link farm on disposable hosting and compromised CMS upload storage further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160822f3f72310---tajusujuma.pdf In PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/83e9df41629d89f540db2c52dc8be311/99987215425.pdfIn PDF document text
    • http://www.asiacoservice.com/file/files/18804764835.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/161093cadbc7fa---kozewe.pdfIn PDF document text
    • http://msinziniering.com/userfiles/file/vuzip.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/5d632bf79cb73feabe6ef8226092ed54/98525119871.pdfIn PDF document text
    • http://gocreate.termall.pl/upload/fck/file/vuvotuxo.pdfIn PDF document text
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/22b5fd9ba0ef83a8c6f380b7e2e68147/pefokovuja.pdfIn PDF document text
    • http://arslanemlak.come/file/wajuluwuwuxi.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/8347ecc23fcf7b5d60b8f3f122cd40ef/10194901162.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e2a17fb73---mupanipaxa.pdfIn PDF document text
    • https://reparationmobile.net/userfiles/file/gotibumuwa.pdfIn PDF document text
    • http://intertexmedical.com/userfiles/files/xesawovawuwa.pdfIn PDF document text
    • https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ace2d244df0---rogojawasitidanuvafam.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/4be66e97fd43485bff492482a8feaa5d/romogare.pdfIn PDF document text
    • http://hill-macktribe.com/clients/7/78/785e88641dcef8d5cadf71fa969cae92/File/9332958885.pdfIn PDF document text
    • http://flagrant-desir.com/userfiles/file/42981989095.pdfIn PDF document text
    • http://maychaybocaocap.com/app/webroot/uploads/files/42849995189.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aac0f2ecb80---kapovadikililorelel.pdfIn PDF document text
    • http://se-ty.ru/uploads/userfiles/file/59064349948.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b58ef05c2fd---jojofuw.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e7c9bb50d69---nokegusemugujabogek.pdfIn PDF document text
    • https://vinocastillo.hu/editor_up/delazasanatisagat.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=himpunan+smp+kelas+7+pdfPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b4b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4B7 16552 bytes
SHA-256: 3e6e51c51fef17418ccbf70e6936408d726121f3c2d626d661d2bea9ea79c61d
font_01_sfnt_off0000df08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF08 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f71f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71F 10576 bytes
SHA-256: 77979a254cd084cc85e806f8f8e5b6c0c7cef8535411078381d28c60cf1dddda

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