Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d6adcefbf097ffb…

MALICIOUS

PDF

88.6 KB Created: 2021-08-06 13:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: f3792e658beddaac39a944976f242645 SHA-1: 61e41c25bc26b2f979b3f9309872bccc0016d151 SHA-256: 5d6adcefbf097ffb83c3530b1dc99304a775a1da62dfe6c87d9025aa02537f19
164 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The presence of a visual download button and numerous external links, including those pointing to compromised CMS uploads and disposable hosting, suggests a phishing or malware distribution attempt. While no scripts were explicitly extracted, the nature of the links and the overall detection profile indicate a likely attempt to exploit vulnerabilities or trick the user into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://oniceh.ru/uplcv?utm_term=download+naruto+online+mobile+mod+apk PDF link annotation
    • http://ecohouse-lab.de/userfiles/file/5266717325.pdfIn PDF document text
    • http://iaestedresden.de/userfiles/file/21001939077.pdfIn PDF document text
    • https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/351f9464e4e65803cc6898ac8f880cf1/ganit.pdfIn PDF document text
    • http://sacmacbook.net/userfiles/file/86471185459.pdfIn PDF document text
    • http://bhs-class1957.com/clients/35434/File/42381775584.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d85b5e7ac3d---88288285387.pdfIn PDF document text
    • http://apexibd.com/uploads/fck_uploads/file/43518117014.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16094e712c633e---99214133607.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/59e2c982d6ef74cfa96ae0b6bcdfa3ab/48685030670.pdfIn PDF document text
    • http://championshipsportsrings.com/clients/23492/File/27700197029.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/h2a25su95gldc0vop7i2lpibon/ralozefepiz.pdfIn PDF document text
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/e79454e382b1af7fc1d50235c351465e/59314327423.pdfIn PDF document text
    • https://gyn-koe70.de/obrazky/file/13448516609.pdfIn PDF document text
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/16097c3147b70c---98509914487.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fe59f730215---dizosexurowelemol.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/51859361913.pdfIn PDF document text
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a4bb77b4373---99940128752.pdfIn PDF document text
    • http://campbellelectronics.com/uploads/jexufimifosojetujegurutu.pdfIn PDF document text
    • http://madiran-cruduparadis.fr/ckfinder/userfiles/files/vizosubejesifuravidubuvof.pdfIn PDF document text
    • http://logisticsnetworks.net/ckfinder/userfiles/files/45151254845.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/lovulene.pdfIn PDF document text
    • https://www.hausbootgeiseltalsee.de/wp-content/plugins/super-forms/uploads/php/files/v0jqugjcuib621g29gbgdlf5p4/35543367963.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/wexasopezokesux.pdfIn PDF document text
    • http://tlxzkj.com/uploads/file/220113057621.pdfIn PDF document text
    • 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_off0000f660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF660 10804 bytes
SHA-256: 38c871e8a52620bb2c15945033dbd053a78b27c680b8d7d892708dafd269028f
font_01_sfnt_off00010f0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F0A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001271c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1271C 17244 bytes
SHA-256: 6872abf2edc010d2032746b1f972c1b6963c3c5ec37c6a5963a787d3e09a282d

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