Malicious PDF — malware analysis report

Static analysis result for SHA-256 feaace3b37618a87…

MALICIOUS

PDF

93.1 KB Created: 2021-06-28 04:01:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 36755f7942eaac31ae04ec150f6a3cbb SHA-1: ecf552d6744c7c7b49b5b95d5abcd8a96dc14e5a SHA-256: feaace3b37618a87f715c46b89f9cf4ccce1028e2e30f1c712a4358fb31aee53
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which point to compromised WordPress upload directories or are hosted on disposable domains, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious sites or download further payloads.

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 https://coluer.ir/documents/file/tonudowarokafamosuki.pdf In PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606ea3542c13c---bozusofebiwulofifoka.pdfIn PDF document text
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/e3ee42c5ba59eebfa9f3c82adbcf4750/74591595355.pdfIn PDF document text
    • https://ildiko-szepsegszalon.hu/userfiles/file/mufenevipawedusilexupika.pdfIn PDF document text
    • https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/e69fe1cc0a21e3ba41e0f8e6bee88a69/xobiduzovak.pdfIn PDF document text
    • https://allcreaturesinc.com/files/files/kaxutapar.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/6fe91b6e2afaecd228e2ac201da38631/17613602072.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/9d6ba00a0b6c2a2800a4a1cb00388dc9/39742688451.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2b98530ad9ab74825bcd48887e88181a/33828491000.pdfIn PDF document text
    • http://gyobel.it/public/file/8822292838.pdfIn PDF document text
    • http://hutbephottaihaiphong24h.com/upload/files/17242843017.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160972db35496b---86664747028.pdfIn PDF document text
    • http://www.peritaonline.es/ckfinder/userfiles/files/xivigafakojebezitoki.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/d957966ef12528f97264f60a64f4d198/kimiwixijewinizibes.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffac737654---kufimapejomanenoz.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070c2251804d---tuzajipinubozewu.pdfIn PDF document text
    • http://morethancars.nl/uploads/edytor/file/porumirujonavo.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/33ragivu1kn1cpv4vs2j5hjp70/tofudabobebekafur.pdfIn PDF document text
    • http://thietkewebbacninh.com/webroot/img/files/87088785155.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/6si4fjirlkg66kv8cjfov6h3m5/keguvoduwepupasise.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/legurazavidozamonega.pdfIn PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/c1c0589d654d8ad47d0d24341deade58/1360321939.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=auriculoterapia+terry+oleson+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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10419 10808 bytes
SHA-256: 041c6a8a9d5b1b52e39c608955a3ddfd455f301a6ffa57d7719149bac042b1c4
font_01_sfnt_off00011d29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D29 18980 bytes
SHA-256: 246627d3da1781e6687a3746a509defa6353c2573571fdd325399a564612acea
font_02_sfnt_off00014d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D58 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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