Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c6369547c3385a8…

MALICIOUS

PDF

79.5 KB Created: 2021-09-03 05:59:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: b290748ea2c2c98ca392c1da440fe812 SHA-1: 14c4fd5fedb0237d64b9528d717ad78dcaf5a951 SHA-256: 2c6369547c3385a8465d7d5877f79b4e837b5f1f2ef7d52bedfcb093fc0dcc2f
156 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, indicating it likely exploits a vulnerability or serves as a phishing lure. The document functions as a link farm, directing users to multiple compromised websites, many of which are hosted on WordPress installations and serve PDF files. These links are likely intended to lead users to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160efd6dca5d2a---10440686324.pdf In PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/3d86ba7cfe13a60813f12507e2fe2556/lelakire.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c438a1caff9---zirekifazejal.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/nsv0p4aktusbko2kcf5hod49or/tubime.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1608706c1dbd75---89286251192.pdfIn PDF document text
    • https://saatyapi.com/upload/ckfinder/files/97124582242.pdfIn PDF document text
    • https://www.oalysa.cz/ckfinder/userfiles/files/dakoloxaxovowubitune.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160c0b8ec0bc7a---36335499306.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/5a0b88ffcd09c036d84f15638efd8a05/bawima.pdfIn PDF document text
    • https://middletonchambers.com/ckfinder/userfiles/files/34273642521.pdfIn PDF document text
    • http://techsystem.gr/data/uploads/ckeditor/files/93703958847.pdfIn PDF document text
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/gulabukafizalo.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/ce3956e4b43662546b0de203a65cf777/xumujo.pdfIn PDF document text
    • http://vtvxm.vn/userfiles/file/6051443443.pdfIn PDF document text
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a405a0b6c8---lovop.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160a94c4d59c24---lejugajorefer.pdfIn PDF document text
    • https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/c0qtgjt7vddn3s1frk3e36unj1/kezifatekesoruponofad.pdfIn PDF document text
    • https://dildendilecevirievi.com/upload/ckfinder/files/dipaganagavobogisuxo.pdfIn PDF document text
    • https://eviinstall.com/userfiles/files/savapubepipizugajopimapi.pdfIn PDF document text
    • http://zae.me/datafiles/file/kenupewewevikew.pdfIn PDF document text
    • http://travisreunion.com/clients/1/1d/1d9c560ef9ee6310b862f4c9d288d7bd/File/19525164389.pdfIn PDF document text
    • http://apexhealthnutrition.com/newerac2c/userfiles/file/67959174488.pdfIn PDF document text
    • http://nandishoverseas.com/UserFiles/File/97004270691.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/f6181353f6289b1e26d318f67eec9d16/zamos.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=adjective+clause+exercise+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_off0000ce4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE4B 10768 bytes
SHA-256: c55b2a1f0c55030aad2a658e7903f4403209754b687737aa831851d9cfe08f18
font_01_sfnt_off0000e735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE735 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ff47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF47 18852 bytes
SHA-256: 63bc112feef3a7e70ed792b0afc7485e5b713b646687a150c3e7ac56d83b6e88

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