Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e70c5038a8e03d…

MALICIOUS

PDF

69.9 KB Created: 2021-09-01 10:45:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 016ca98621323231890fc5e1c01caa0a SHA-1: fb7ab19b209b2f22d7781a62c23e3fe31e9d30a3 SHA-256: 47e70c5038a8e03d9defcfe860be0e3cca7afe4cabc1fe6f12a85fd4aee1e3f6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution attempt. The presence of external URIs and compromised CMS upload links indicates the file is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 https://smidgel.ru/uplcv?utm_term=exchange+all+age+school PDF link annotation
    • http://weberstellen.ch/userfiles/file/javosup.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160dd7fb24b5b2---51092587162.pdfIn PDF document text
    • https://regionalhealthprogramsww.com/images/file/48140174995.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/mokonenigowufedebad.pdfIn PDF document text
    • https://bhandarisurgical.com/ckfinder/userfiles/files/38550475485.pdfIn PDF document text
    • http://finalbrand.cz/upload/file/61186381168.pdfIn PDF document text
    • http://ronaldtan.nl/images/photo/tulezezoxijosaguruxiwad.pdfIn PDF document text
    • http://gimnazjum-krasiczyn.pl/img/userfiles/file/xafuwisuvenagozefima.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161103aa90e450---93150581480.pdfIn PDF document text
    • https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/95ed802c16aef4a774e2ce8e8aa3b94a/topemigowilopibuwetirano.pdfIn PDF document text
    • https://tch.lu/files/files/pebebaxaxevikuzekunux.pdfIn PDF document text
    • http://guowangcable.com/d/files/susigefimizij.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160beac2e09845---9506468087.pdfIn PDF document text
    • http://laxycoffee.com/upload/files/23755323480.pdfIn PDF document text
    • http://merwepizza.com/upload/file/67263403283.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fc26c28d8e2---34835491840.pdfIn PDF document text
    • http://abwplazaview.com/uploads/files/zikowimegazed.pdfIn PDF document text
    • http://roughriders66.com/clients/f/fa/fa96273273f04fd2a06feef12b1e4d70/File/sovusasogepi.pdfIn PDF document text
    • http://chromavials.com/d/files/kuxajoremixegigoz.pdfIn PDF document text
    • http://www.radio-kum.si/data/files/pixilefupoxaraf.pdfIn PDF document text
    • https://congchung7.vn/upload/file/pazumokiwirewolakoxegav.pdfIn PDF document text
    • http://np-laser.com/upload_fck/file/2021-8-19/20210819170910514731.pdfIn PDF document text
    • https://ksmt.edu.np/assets/ckfinder/userfiles/files/xogadoj.pdfIn PDF document text
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/2ee19c303d421ad964bf2aaf9e1e3b26/64393865644.pdfIn PDF document text
    • https://ayurvedaemart.com/uploads/file/93360652392.pdfIn PDF document text
    • 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_off0000b69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB69E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ceb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB5 10304 bytes
SHA-256: 2475b73208e58e64d6ce6e0c7e2521f71df4113043c68e538a4c5b56c5d05a09
font_02_sfnt_off0000e5e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E7 14540 bytes
SHA-256: dd535269442d9e3e84ff795dfc693623170740469234be11249ff4f03c7f10b8

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