Malicious PDF — malware analysis report

Static analysis result for SHA-256 e47db53e8d967723…

MALICIOUS

PDF

88.3 KB Created: 2021-07-02 21:53:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 43b2538fed95cede9b2dc5979cfe9f3c SHA-1: e8f9bdefca38258d9cbf754765888956eccc9b64 SHA-256: e47db53e8d967723f65c6f27909592ce12ae9b311f871005c3b6f73592749898
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to external sites, many of which are hosted on compromised CMS uploads or disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://coretry.ru/uplcv?utm_term=physical+map+of+south+africa+with+rivers+and+mountains PDF link annotation
    • http://email-database.info/userfiles/file/86291737337.pdfIn PDF document text
    • http://aven.su/userfiles/file/95140337686.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/79187744737.pdfIn PDF document text
    • http://krevue.cz/UserFiles/File/mawezarijurobo.pdfIn PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160827653912f5---jusizusofafaridu.pdfIn PDF document text
    • https://muratay.nl/userfiles/file/81383834521.pdfIn PDF document text
    • http://abwingsva.com/uploads/files/63206775671.pdfIn PDF document text
    • http://aisef.org/uploads/userfiles/file/file/38897369329.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7ab93ee18---68778409656.pdfIn PDF document text
    • http://teckim.it/themes/userfiles//files/8299433232.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/kvqu5t4bcj383mk04bkdmbn6nr/60747502168.pdfIn PDF document text
    • https://gyn-koe70.de/obrazky/file/98945218777.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d8274f25b61---10476365.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/160a96391f3d2e---niwijizesugi.pdfIn PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606f01618ac0e---29371686171.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b42c57bea98---zidurodosolafusojoxuzeti.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0136f5bd27---6133460025.pdfIn PDF document text
    • https://almondzwealth.com/administrator/imagetemp/file/50041471921.pdfIn PDF document text
    • http://esrafisek.com/images_upload/files/xasirawakonuko.pdfIn PDF document text
    • https://suativisamsungtaihanoi.net/upload/files/zawefivogoteve.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160b9df303c4b1---zopurelategilifim.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF059 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001086b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1086B 17744 bytes
SHA-256: ebe81d8a37345a3c910da048f98d0d8b03244b4141a71353be58a607588607ad
font_02_sfnt_off00013763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13763 11252 bytes
SHA-256: 99040c91e54e2fea5fb3ab2a448731aaed56961f6862739a199080e83a93aa49

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