Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc70e9df8f0cabd4…

MALICIOUS

PDF

81.0 KB Created: 2021-09-03 03:12:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 9d9ca5e93e48220b188e8c084482acf0 SHA-1: a9f33c31203edccf14c4ada0afb99f3959e957b7 SHA-256: fc70e9df8f0cabd4192cfa53a8a44ec3b0bca4079f3075ff1359a40bb6a10c0c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites utilizing the Formcraft plugin for file uploads. These URLs are indicative of a link farm designed to obscure the ultimate destination, a common tactic in phishing and malware distribution. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification. While no scripts were directly extracted, the structure and URL patterns suggest an attempt to lure users to malicious content, likely via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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 https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073592b45437---daluvatisunimadikuza.pdf In PDF document text
    • http://baodieptailor.com/uploads/2021-08-12/images/files/piwukerogeru.pdfIn PDF document text
    • http://maurovalleferroarchitetto.eu/userfiles/files/dubodulevugosulemukedasux.pdfIn PDF document text
    • https://vildmarksjagt.dk/userfiles/file/2206229166.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1607eeb3996dda---27191548055.pdfIn PDF document text
    • http://smenergy.kr/uploaded/file/7819625086116694128297.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160784af15e844---489583776.pdfIn PDF document text
    • http://goodtraefarm.com/ckupload/files/62652127115.pdfIn PDF document text
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa5d0a0b1a3---44398905017.pdfIn PDF document text
    • https://ocw.tw/uploads/files/zumesotetatamolifulotevaw.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160754e4f7a0e2---wezovulidujiwofuvedara.pdfIn PDF document text
    • http://www.saveurspoitoucharentes.com/admin/ckfinder/userfiles/files/39150604539.pdfIn PDF document text
    • https://www.antoniopopolizio.it/ckfinder/userfiles/files/33526241234.pdfIn PDF document text
    • http://rhodeislandalpha.com/clients/56223/File/47206993007.pdfIn PDF document text
    • https://himalayanthailand.com/image/upload/File/jexokupifipaxofazikeduvig.pdfIn PDF document text
    • http://citra.cl/userfiles/file/42248246212.pdfIn PDF document text
    • https://circolodelpistone.ch/userfiles/file/13747789213.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608d9797b6d5a---89515147181.pdfIn PDF document text
    • http://efuturesthai.com/uploads/file/85192721225.pdfIn PDF document text
    • http://atek-ent.com/upload/file/93353313675.pdfIn PDF document text
    • https://shellserva.nl/docs/Image/file/72048593914.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608b06dd5e0de---dububetetinovup.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607df9a3e1ae4---74685152088.pdfIn PDF document text
    • http://mebelhotel.ru/userfiles/files/bijolalomonerifagiwofu.pdfIn PDF document text
    • http://oldtimerclub-thueringerberg.at/images/file/jamafafilemuxebebe.pdfIn PDF document text
    • https://fontaine-eva.fr/userfiles/files/vogipip.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/c00b1448c0aa807192b0d2f9927a06ab/52118155168.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=filo+entoprocta+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://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_off0000d2e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eafb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFB 19320 bytes
SHA-256: 7f8fc0c4b0f9c7415bf0644c66ed638f0f9154c26f05be33050b18bcf440aa5f
font_02_sfnt_off00011d3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D3D 10420 bytes
SHA-256: aa2bab3f0a60ef81228fa2177c0265ef6487efa3f09a8e2bb8323e421f13bea8

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