Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9a21695638a0fe4…

MALICIOUS

PDF

72.5 KB Created: 2021-06-25 09:35:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: afa4a8102c2488004f302f47d807eee4 SHA-1: 80d45b65479332d6b7c785cdc8f1b7b688fde62d SHA-256: e9a21695638a0fe42da272254e7698443b64440db1fb5984f9673a3c2f8e771d
156 Risk Score

Malware Insights

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

The PDF document contains numerous links to potentially compromised websites, masquerading as a 'Rome attractions map pdf'. Heuristics indicate it's a link farm on disposable hosting, likely intended to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1607e427e0757c---62179675278.pdf In PDF document text
    • http://greenworx.eu/images/uploads/files/dexon.pdfIn PDF document text
    • http://shuswapladystriders.ca/userfiles/file/fasuzudominobavenamizo.pdfIn PDF document text
    • http://galluccifaibano.com/userfiles/file/nabezomamogusenikiwovavum.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160882b9ed63ba---22678894690.pdfIn PDF document text
    • http://cokhibaosang.com/media/ftp/file/7974068275.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/v4cm8lah8vtl141n5ch9hla1ad/55771132960.pdfIn PDF document text
    • http://noxsun.com/jingkelun/userfiles/files/20210612011044.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/o0eob5sgng1j7ppbsfp248s9no/17320417486.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608558d738209---rifisutir.pdfIn PDF document text
    • http://naturallabs.fr/userfiles/file/dasal.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1609452bfacf65---51250100209.pdfIn PDF document text
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607857d64a5cc---94818765210.pdfIn PDF document text
    • http://vienkiemis.lt/app/webroot/uploads/userfiles/files/16770142845.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=rome+attractions+map+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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA0 5276 bytes
SHA-256: 54c4f26920ee0c0d40bbc48e06aaf45b58e2cfc759c82d9c0880e1ad502a3007
font_01_sfnt_off0000ee7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7E 11876 bytes
SHA-256: 53472eb476b1f267d6061a53d39ee517450d4eef304edbfa12b47274aaf4b670

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