Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdeb8c2f26324032…

MALICIOUS

PDF

123.6 KB Created: 2021-06-28 16:43:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e25a0aace1ac681918084f60ac32ec3a SHA-1: 6adbd841ee9bbb7c4be1d4d70377e84d8a72942d SHA-256: cdeb8c2f26324032b252f7af45f0e02abe43ba7c93da3f28b6d16d57cf6ff8e4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm pointing to numerous other PDF files hosted on compromised WordPress sites, indicating a likely phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly suggest malicious intent. No scripts were extracted, but the structure and URLs are highly suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e005b535d---76276116816.pdf In PDF document text
    • https://whiteplacard.com/UserFiles/file/xijewovugi.pdfIn PDF document text
    • https://businesslife.com/content/file/96908677658.pdfIn PDF document text
    • http://2sisaccount.com/userfiles/files/vulujuw.pdfIn PDF document text
    • http://rheinmotel.com/userfiles/file/60747349224.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/75ij5lsmo5s8gqiucfvrbc1nmi/51345425234.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//46042139215.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/48688442138.pdfIn PDF document text
    • https://soechi.net/userfiles/file/xifewumugetuwafutuziraba.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/6ff98d524bcbf36f76b9e0167614fa03/mabekurerozurixoj.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d81f2390545---9961097853.pdfIn PDF document text
    • https://gamaconsultores.cl/upload/file/89334604687.pdfIn PDF document text
    • http://beytarimcilik.com/admin/editor_resim/file/6938962410.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a802de0bec4---37943057002.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16088d4805d098---jevoderomamorumugokij.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079302629bd3---96226607499.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/fcf580c6563514b299bbcc793f194acf/78590941584.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a37a07bc171---xuneduxetotubuxegutojebos.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b975b9d41b---1708169153.pdfIn PDF document text
    • http://tamker.hu/userfiles/file/59327198365.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/34441dbd3ee384ef535f22ba1099d1e9/porubusegaxemejabevi.pdfIn PDF document text
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/67fe8e6d753da3f96269bfcc658e6ef0/13352005147.pdfIn PDF document text
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/8794f6914a77ce2653cddffc2b756aed/mulovezunowixi.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/t6sv7qdjhdaau21spk8f5adhgv/polezowowuvijirovebap.pdfIn PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/42916233133.pdfIn PDF document text
    • http://cuacongtrinh.vn/upload/files/64715964636.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/4e8c4106024b64e65a16004aa6d44690/66924403729.pdfIn PDF document text
    • https://codecs.roimages/file/bopomutafaxeku.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=fashion+words+that+start+with+fPDF 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_off0001827e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1827E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00019a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19A90 17912 bytes
SHA-256: 676a8ac3fa6fff75ca4c4ddad0506fb9fc1d160eda09b6826a5c07b773f8887a
font_02_sfnt_off0001c91e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C91E 10336 bytes
SHA-256: 1220e56bdca198d23653a481cd7e2c70ca8695c2aedcc87b2c1664b99f21146a