Malicious PDF — malware analysis report

Static analysis result for SHA-256 69cb1df1fc96e0f0…

MALICIOUS

PDF

89.1 KB Created: 2021-07-26 15:20:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: ac271eb9bcf4403e89d9bb7e0f607e6a SHA-1: da7ff4ddeebd8286fea67aeea179298614d15396 SHA-256: 69cb1df1fc96e0f00fa80cdc8dea431b6e0d5b1a1eb7d9407a863a4777f20b78
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, pointing to multiple compromised websites and disposable hosting, likely to distribute phishing content or malware. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/2baa039d5446ac75ae0ee0e7c14121af/33046267032.pdf In PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070358c85798---xevodurupevowoxoxajufikez.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/1f6b0a87eaac7cc33161b03ec2aa33bb/fumoguzowekujunejavena.pdfIn PDF document text
    • http://bandai-k.com/userfiles/file/28963231267.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/cd7f8884179d7310d787faf16c44a495/39389354763.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/6765640821871f99bff8e51d24140afa/jofiji.pdfIn PDF document text
    • http://nhatminhtrading.vn/app/webroot/uploads/files/jefupolanojoguf.pdfIn PDF document text
    • http://houstontca.org/Content/uploads/files/77630706185.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/68d4f14d97e10325f5a2601d4e3bb31b/patum.pdfIn PDF document text
    • https://directorvincentchow.com/fck_filemanager_upload/file/52661069721.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abe9d4175b0---doxozanebifepigasu.pdfIn PDF document text
    • http://mofrantech.com/userfiles/file/93230504533.pdfIn PDF document text
    • http://srsheicha.com/uploadfile/file/dizub.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bc3254db969---kenebegifamuzipesaguwovot.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/7abf0e14f5a3513b2d9e05cbb480e5fe/tisutexufajelivegijafo.pdfIn PDF document text
    • https://www.propertyadvisersaustralia.com/wp-content/plugins/super-forms/uploads/php/files/07622239bf17f004ddb5b19851c8ae53/kasejoxaviwari.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609bd5c4f3a42---46432105185.pdfIn PDF document text
    • http://bydnjl.com/userfiles/files/65569984059.pdfIn PDF document text
    • http://czdashan.cn/uploadfile/file/2021051105091973499.pdfIn PDF document text
    • https://unibel.pl/pliki/upload/file/gepexewut.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d56758209ef---16813253980.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd0cdd59f27---rorak.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=how+to+treat+expressive+dysphasiaPDF 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_off0000f834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF834 17768 bytes
SHA-256: 8aaf10a1a78365dc8d16edad47d72921e3357d55793d182fb4eb78d85a603f78
font_01_sfnt_off00012538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12538 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D4F 10696 bytes
SHA-256: c9154331c67ee182452fdc863ba93ede07e3809dd48800f7e392d62d0a31c738

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