Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9b302815f3c2635…

MALICIOUS

PDF

88.5 KB Created: 2021-07-03 07:31:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: c0cb659af9c6a7cbc6c3a95fb7adb239 SHA-1: b6c91e7b46f54aa29a649416f55e692dd1b570b2 SHA-256: d9b302815f3c26358f58b9509b01e6d8f217cee52bf844e0db4171e19d73d945
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious. The 'Clipboard command execution lure' heuristic indicates the document instructs the user to copy and paste content into a command-line interface, a common technique for executing malicious code. The document also contains numerous links to external sites, many of which are hosted on compromised or disposable domains, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.valathors.com/ckfinder/userfiles/files/buwudaxatobe.pdf In PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfc5740d09d---3031289954.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/16079964075295---26073554992.pdfIn PDF document text
    • http://piecco.eu/upload/files/16014123267.pdfIn PDF document text
    • https://aspaeng.com/files/image/files/junadutefogakesedirox.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609856739f294---wanume.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160795436b3233---dijaxonapajokitubepaxo.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/pebudagirokoviguro.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a29f28df255---57720696392.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/16086c46c116cb---funas.pdfIn PDF document text
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/0a41a164afe4b6ccbffc7ebebeb6dba2/xuwedubetaba.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/106799b10c584e310aa23858039ed917/54146299447.pdfIn PDF document text
    • http://romanakladatelstvi.cz/userfiles/file/32699578811.pdfIn PDF document text
    • http://afslab.asia/upload/files/fololep.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/ebd4a686ca497e0c39b35035fd7aec29/visopotitawagas.pdfIn PDF document text
    • http://abcbyspu.net/ckfinder/images_store/files/lasenanerepeg.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a089c4a7db2---tegog.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/160c526079e566---sekonasaxudunox.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bb71c65f82a---24251500167.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/qjrek8185uodm0ojnptm8bcl25/13865700932.pdfIn PDF document text
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/988ffa3c150b0c71af3cd6e659a8a75b/jenobaloselut.pdfIn PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/08o8qgigk4ftr461adps8s0sh4/26327500272.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160943f41cc974---sunotibivite.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/36eae0b4d23b787ac08f919a12826831/mevitinutad.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=anet+a8+bltouch+wiringPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCD 16468 bytes
SHA-256: f0dc4b3163499180a62a372ab408af4ebad1f4032886dc63ff298fffe415fccd
font_01_sfnt_off0000f254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF254 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010a6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6B 10856 bytes
SHA-256: b011c845428cd6093fa95ebfe4b353ffe3820f147bda5b57207cce716a2d5dbc
font_03_sfnt_off00012390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12390 18316 bytes
SHA-256: c3d697c8ac0b47d07a7dde08c5322989688953bd58ee8ce311309f5bc4bdca51

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