Malicious PDF — malware analysis report

Static analysis result for SHA-256 09ec669827ce8480…

MALICIOUS

PDF

82.0 KB Created: 2021-09-12 18:50:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: af5322de7c75a37759833091027dc760 SHA-1: 80c9ca17dbc79b3c17cbc1bd8b6ed8512d1c8063 SHA-256: 09ec669827ce84802741bc0d0153964cbd7ca6fe3452e214caf9db1cdfc52109
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript and numerous URLs, many pointing to compromised WordPress sites or IP addresses, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://volvo-cars.jp/js/upload/files/mefibafuliredupuxotokebi.pdf In PDF document text
    • http://domesticsolutionsagency.com/userfiles/file/fajadeferegipoxig.pdfIn PDF document text
    • http://cgmorenanews.com.br/ckfinder/userfiles/files/16747647993.pdfIn PDF document text
    • https://holcom-solar.com/webroot/img/files/dazirakerezizijofumat.pdfIn PDF document text
    • http://conhantaoankhanh.com/webroot/img/files/86683142085.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d27b8c732d---rudakolemowi.pdfIn PDF document text
    • http://abogadosaguilar.com/ckfinder/userfiles/files/rowipejajonelarep.pdfIn PDF document text
    • http://conomiya.com/images/uploadedimages/file/91483605763.pdfIn PDF document text
    • https://veaodaibrahma.com/uploads/image/files/42286949051.pdfIn PDF document text
    • http://longruiglass.com/ckfinder/userfiles/files/20210901_055905.pdfIn PDF document text
    • http://rama-sp.com/rama/webroot/js/ckfinder/userfiles/files/7962842795.pdfIn PDF document text
    • https://gsacademy.ge/uploads/files/50322035417.pdfIn PDF document text
    • http://edu-soft.ru/site/htmlimages/file/27505201974.pdfIn PDF document text
    • http://sieuthicayxanh.vn/webroot/img/files/womepuditajotugiwidot.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613983e742e81---40221775845.pdfIn PDF document text
    • http://lovesushiscv.com/uploads/files/zanajemume.pdfIn PDF document text
    • http://solo-reisen.com/media/images/file/79937722574.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/ae32ef72363dac74bc260839f7dcad30/metijeba.pdfIn PDF document text
    • http://halongbaycruises.org/upload/files/wikake.pdfIn PDF document text
    • http://ipcmanpower.com/admin/style/images/userfiles/file/75623146047.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b7df8e0917---laxeberivoxixokisa.pdfIn PDF document text
    • http://boracayg.com/FileData/ckfinder/files/20210902_23A6CEAED46A1901.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16131a95bc9fa9---genev.pdfPDF link annotation
    • https://mehreganimaging.ir/images/upload/files/tufizoxejudavafumenupuxes.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=iot+hidden+menu+androidPDF 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_off0000df03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF03 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f71a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71A 10352 bytes
SHA-256: 72ac7be3ed893414f806d31425878d6234c6b5a9ba3909567ee8b4410b10bce5
font_02_sfnt_off00010e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E39 16948 bytes
SHA-256: ec4929cd05c07b1489b491a68e258518310a13e361893edfc7076f71c0f8ad70