Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ebee5d4418f0044…

MALICIOUS

PDF

84.1 KB Created: 2021-08-17 08:33:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 5c7ec394cd59d07a826a73b4e42f4d06 SHA-1: 0bbc0d2e3588618182a65ed46edf0df7e9197900 SHA-256: 9ebee5d4418f0044ea23d273154893c97054b050b0bb1df9502aa75d37559960
156 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier with high confidence. It contains numerous URLs, many pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded JavaScript, though not fully analyzed due to obfuscation, further supports the malicious intent of executing code or downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160c78289f2650---zogejumetulolizoperejaw.pdf In PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/dl1se183fqk94a3h3mtcb7dth0/piwivotipejulafizononama.pdfIn PDF document text
    • https://laser123.com/geektic/files/xelot.pdfIn PDF document text
    • http://aj-freight.com/ckfinder/userfiles/files/85923726513.pdfIn PDF document text
    • http://cunningham-reunion.com/clients/7/73/7399477c88ef979e1ad3ac38e42cffcc/File/julugetepijijovafa.pdfIn PDF document text
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/7e55624f43e326b45f852af0d35e4ff9/votorifadu.pdfIn PDF document text
    • http://jar-ted.pl/file/vikum.pdfIn PDF document text
    • http://kemenyseprosiklos.hu/upload/file/kelilobiwaloxotos.pdfIn PDF document text
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/e8de52eb9aa33b1be0d126fdb700bb0b/52309411923.pdfIn PDF document text
    • http://chaodontuonglai.vn/uploads/ck_upload/files/98967640583.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074cb6547555---35961343026.pdfIn PDF document text
    • http://tecresconsolidamentorestauro.it/fck_data/file/vapas.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/80418efbc35c9de725e66d7ffe428b24/pidenipelepevepegafilutab.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/2f5b05f83109674909b544fd6ce315ec/pafowekidesakezenuziz.pdfIn PDF document text
    • http://shethof.ch/cgi-bin/dynamisch/file/91631034900.pdfIn PDF document text
    • http://195exim.com/datas/files/83651567844.pdfIn PDF document text
    • http://zulassung4you.de/bilder/file/kezokuwabanuregezabag.pdfIn PDF document text
    • http://raczcsalad.hu/files/52436230884.pdfIn PDF document text
    • http://vtdsbinhthuan.vn/public/uploads/userfiles/file/mugiraw.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/pf08qua7re2df1ii45ujuc5336/3989765154.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/97677242556.pdfIn PDF document text
    • http://sylvianapoles.com/clients/e/e6/e63d90d46a840f0b3195f531cec11f6e/File/14982905543.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160725ff617d11---xojenedepomudulaviw.pdfIn PDF document text
    • http://1960ihs.com/clients/e/e0/e0b58928a48036c9af8d6cfc9cffdd99/File/76592953649.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160e34741c502f---zegifetejex.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=el+libro+de+los+muertos+pel%C3%ADcula+onlinePDF 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_off0000e0e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f8f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F7 10960 bytes
SHA-256: 45fafa71e75104d873e19cf3342968a9d86dc66f4221f95c1313736533f9466b
font_02_sfnt_off00011218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11218 18052 bytes
SHA-256: a065f02cc5e1d5e5a877fe7cbad175a3e8aee369cfbbff79270f8a126c5df61c

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