Malicious PDF — malware analysis report

Static analysis result for SHA-256 067da02d81ac0873…

MALICIOUS

PDF

85.0 KB Created: 2021-07-18 12:09:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 7824c15c027aa8441ae30c500df8c02d SHA-1: 6025ae0e570fb73efced2715df38241b613382aa SHA-256: 067da02d81ac08735417d277305bbf21c70a62c84eb59f4b1a4a6cf9260f8f25
164 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded JavaScript and a large number of links pointing to compromised or disposable domains, suggesting an attempt to redirect users to malicious content. The presence of embedded JavaScript indicates potential for client-side exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/nigifox.pdf In PDF document text
    • http://m-styleauto.com/js/upload/files/kinajuzatibobanazewopew.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/3d9c22051877539f7deb87685c740dce/11225413668.pdfIn PDF document text
    • https://west-holding.com/userfiles/file/87418736105.pdfIn PDF document text
    • http://amon-syotengai.com/userfiles/file/gafimuduzexizasorokir.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16097a8be1cf57---xizaxibesobixoxoximewofod.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082693581e52---todesimopudogerozuzegipik.pdfIn PDF document text
    • https://fotoprint.lv/downloads/file/70259110687.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/160751e2202ff7---xagilajafasakerikevo.pdfIn PDF document text
    • http://novichiha.ru/pic/file/mimelisibapa.pdfIn PDF document text
    • http://global-insurance-broker.de/downloads/xevoxodidi.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085ace909127---78231519961.pdfIn PDF document text
    • http://4bzsoftware.com/Images_upload/files/94697923477.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/pnpdpjvpvh60u5h7nmvoudrq4p/11741023020.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/fopatowanitojunogoponize.pdfIn PDF document text
    • http://ackerviewguesthouse.com/userfiles/file/21287917417.pdfIn PDF document text
    • http://www.armstrongre.com/files/files/17663975277.pdfIn PDF document text
    • http://hakkabrothers.com/userfiles/file///jufutajufisekufavexategu.pdfIn PDF document text
    • http://ersatzmonitor.de/userfiles/file/mesafutiku.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/411f6re1u0v2h0a80b2eme4lsj/25538649675.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a934ea6b776---68014130531.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/2a1e8cecd5c5acf3f9c46ee79775eb20/kalusel.pdfIn PDF document text
    • http://all-pass.com/folder/editor/file/bapegidotibukezaguku.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/3f0af7914419ab870084bff84929b4a9/41310316753.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=harry+potter+charactersPDF link annotation
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/19fa66f76509ca2bcc7ee3eb61b50ef0/31731393252.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C9 10332 bytes
SHA-256: 2426053801249a2005eeb371be92cffb08bdceda602c16b743c9109a53cd2316
font_01_sfnt_off00010141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10141 17428 bytes
SHA-256: d5302402861e52fb2e8f57cb94c403af9280c0e5b3598fc77bf03a5a68f7cd19
font_02_sfnt_off00012ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EBF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1