Malicious PDF — malware analysis report

Static analysis result for SHA-256 346b5e08ee813cc1…

MALICIOUS

PDF

86.4 KB Created: 2021-07-07 15:54:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: f3dddc151ef65f91835ff7411a378068 SHA-1: 959904d9712e935d18963f792c4f6b60a0e90b7d SHA-256: 346b5e08ee813cc18fb8f5075b9fdc8d0078782aaa9591083707f3b7be040819
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised WordPress upload storage and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs are likely used to redirect victims to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/20ec65b236cc86fbe8f33ee23f9d7471/litoriginagorikevazokuno.pdf In PDF document text
    • http://quatanggiabao.com/images/uploads/files/kosoleluwevejevaj.pdfIn PDF document text
    • http://xlsferrosilicon.com/d/files/suxolunodedugileb.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16096c9b481251---90482027969.pdfIn PDF document text
    • http://mesterek.net/tmp/70807438953.pdfIn PDF document text
    • http://nmglyxx.com/userfiles/file/32701032773.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160868fb6bd24a---gajivezuraxoxalivanokuva.pdfIn PDF document text
    • http://vom-ragnaroek.de/uploads/file/39078177504.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f60130f517---nazarejujonazine.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608d6c9e1e277---sokufulidowiburete.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/1ug2tqqaqrr6t5vjbt6snb3rj3/41667037169.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/h3js7j2pcm727mco714vq09rn7/xupumuwaditobobus.pdfIn PDF document text
    • https://ctapigroup3.com/contents//files/juderibikiwasoj.pdfIn PDF document text
    • http://vitalchurchesinstitute.com/files/file/46091703409.pdfIn PDF document text
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/e97e09bf735953f9fecc2f853c2c68dc/91763061573.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095d2870b89d---13657897940.pdfIn PDF document text
    • http://partner-support.net/user_data/userfiles/files/75745374784.pdfIn PDF document text
    • http://www.pattyn360.com/upload/forum/files/36192592638.pdfIn PDF document text
    • http://whatifitspossible.com/ckfinder/userfiles/files/67109256209.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/2lh9t2oggsbtne6hqj3mfsl1j7/miwijejuletoxevasimunutuv.pdfIn PDF document text
    • https://dienlanhbachkhoa.info/upload/files/75772357747.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/98b213037fb07c6404749ddd12005615/pivegoxudeb.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=care+for+one+another+bible+versePDF 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_off0000f081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF081 16868 bytes
SHA-256: 0869aeecc4bb21a9e42e6019647da6121d01ed984f432c83fcec14aef53abd42
font_01_sfnt_off00011c42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C42 10548 bytes
SHA-256: 11c70aa1af64e4c3822b2c231d794e1a9b8956692fb595189d90cada39fdbe85
font_02_sfnt_off00013446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13446 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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