Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5f97bada6755876…

MALICIOUS

PDF

79.6 KB Created: 2021-09-04 21:07:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: c00c7c3c3183cd602a6d62759d58ae65 SHA-1: 7fcffcc0591f0adb46d5701a2f49623d92e55936 SHA-256: e5f97bada6755876fa2c8c72456f9a3b1c3f5f62f52553f283467766d3fb19b6
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs that point to various websites, many of which appear to be compromised WordPress installations or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple external URIs and IP literals suggests the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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
  • 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.
  • 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://oniceh.ru/uplcv?utm_term=marcello+tunasi+pdf PDF link annotation
    • http://ettermanenterprises.com/ckfinder/userfiles/files/49619470721.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bd42bd5aa83---kowetarazotu.pdfIn PDF document text
    • http://businessvaluationapp.com//fck_files/file/laxofomevekuwowebejol.pdfIn PDF document text
    • http://dochoiotovn.com/uploads/userfiles/file/rimezaxi.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/de921a2ba126b9ad71ba620751644f80/timejimabifukufedivep.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d47ad54ee7---savajabizagizusor.pdfPDF link annotation
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/45239385104.pdfIn PDF document text
    • https://stef-nancy.fr/upload/document/43803672814.pdfIn PDF document text
    • http://recko.ru/ckfinder/userfiles/files/nebewizivenezenokipifok.pdfIn PDF document text
    • http://gpszone.hu/upload/userfiles/file/68040271758.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b70d84c2277---wedanezofosasanukisi.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3dcb2c616a---pekesok.pdfIn PDF document text
    • http://hart-metale.pl/gimnazjum/userfiles/file/28186920128.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/6ce3fd1849a453b9d0920d705da2de3e/68374521098.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/b2e12917aa55d07277fcf0372255255f/terenukevu.pdfIn PDF document text
    • https://xn--faades-mtal-n9a6a.ch/ckfinder/userfiles/files/13869843918.pdfIn PDF document text
    • https://nstyapi.com/resimler/files/19097362811.pdfIn PDF document text
    • http://vitanova-cattery.com/upload/file/13361903302.pdfIn PDF document text
    • https://nikunjfoundation.org/ckfinder/userfiles/files/fobexefasorogabubib.pdfIn PDF document text
    • http://bularz-auto.pl/images/userfiles/file/vetoxagezezobijugenajavit.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/609b40ea4ad7ba533b9b3f60d82775d1/33941315581.pdfIn PDF document text
    • https://evermoral.hk/upload/file/1627069821.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b9ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9EA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d1fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1FC 18776 bytes
SHA-256: 8d2c6e5085046f874cd7183e5e41d9dd8c24987a759f6415015d53b9174a0154
font_02_sfnt_off0001023a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1023A 10704 bytes
SHA-256: 8ee00ce58a7d26cd3cd6519db29555386e98116d99a22dc4793b61dba2addaf0
font_03_sfnt_off00011ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AE5 16148 bytes
SHA-256: b17e3c388ca520c70044df51a505a8c8de3d1ca9b2e495c629779bc8d31aca59

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