Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2ba63a8e9dd3356…

MALICIOUS

PDF

104.9 KB Created: 2021-06-29 01:26:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: b2516e7709807b8c1c1292c35ca6465d SHA-1: 18104545d602527ff0923ea5a81dd2aedaba9d2b SHA-256: d2ba63a8e9dd33560c93f66eca912a2ec839ef9351e5bd16a1412f1262fa195c
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal numerous links pointing to compromised WordPress sites and disposable domains, suggesting a phishing or malware distribution campaign. The embedded URLs and link farm structure are indicative of an attempt to redirect users to malicious content, likely exploiting a client execution vulnerability.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9926

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dcmheavyequipment.com/admin/images/file/ririxel.pdf In PDF document text
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16090e48f35f4c---fovugevonurakunexanabofek.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/2bce5c30eaf857f4a0f52f218cc9dc1b/radaso.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/uleboavjj24r7k2vq03durnvjj/78578024296.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad0bb205d3c---39832702291.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/d9be6210a1490905d8ee8a8cc4a5fb98/56677062909.pdfIn PDF document text
    • https://coluer.ir/documents/file/53524834119.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef1b543e97---4519992041.pdfIn PDF document text
    • https://bandai-k.com/userfiles/file/78974286304.pdfIn PDF document text
    • http://train-in-japan.com/images/blog//file/50090678204.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d8e6f164912---34662342555.pdfIn PDF document text
    • https://planet-for-events.de/userfiles/file/jawezap.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b31ba86c427---79871596265.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b7725a7df08---bevawobotelojubi.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c79dd91df62---kivexebuwusew.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/r82tivk00tmcsb6em6nle3lh9o/xadexogozaluzinuwajesemar.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093c85ce2851---3866752804.pdfPDF link annotation
    • http://csc0451.com/userfiles/file/20210622163451_vf8mz4.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16088c1eb9220a---57624705609.pdfIn PDF document text
    • https://foodvellythailand.com/upload/files/44400511986.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/80a3077fe522b3409f01e6466dc34a72/83286048904.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a17285ce9---jetemanaxizej.pdfIn PDF document text
    • http://ladyvenus.it/userfiles/files/kuwuzivisuvuzekon.pdfIn PDF document text
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/4ab59a781a740f3c2b1288201d8932ea/91148675227.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=land+of+the+long+white+cloudPDF 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

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_off00013507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13507 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00014d19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D19 18664 bytes
SHA-256: 69422479f2bd376c00ec4c169ee85dc5cd12127036b6a395e7dc1d6f16ca7560
font_02_sfnt_off00017e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17E18 10628 bytes
SHA-256: 4bd4cf4dd5acad11063af9e2a2e7ebfa4920a8a2f8b0320a951c63c08795032d

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