Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ee6046e912d22e…

MALICIOUS

PDF

87.4 KB Created: 2021-07-27 16:48:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5a4f612e54f3e55e2c04cf5748071643 SHA-1: 95834ec9c21a9510c825819c2dd0c9bcf10d16fc SHA-256: d0ee6046e912d22e7e5a8f88135e1330ca040f34b2568e7a4d07fa6922cb383b
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1553.005 Mark-of-the-Web Bypass

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. The document contains instructions to disable security software, a common tactic to bypass defenses. While no scripts were extracted, the presence of multiple links to potentially compromised CMS uploads and disposable hosting suggests a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/d3fa26b4e8f31d3c6f1f53607f77392d/buvep.pdf
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16076be9ddf9b1---3845367367.pdf
    • http://lifecare4all.com/upload/files/pifetamatupokawewufu.pdf
    • https://samarpanbharat.org/trila/userfiles/file/53108896132.pdf
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/10dbfdf8d10f3b51f2fe1f94a9923668/46767785818.pdf
    • https://cepatdaftargroup2.com/contents//files/watipafolu.pdf
    • https://coluer.ir/documents/file/jabiporukanedawonini.pdf
    • http://dribblebar.pl/userfiles/file/sovikabativob.pdf
    • http://954move.com/clients/4890/File/31175173221.pdf
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/9pmj2jsct3alrdliqja5hnd6q4/23389966926.pdf
    • https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/ddc5f6qk6ga3jvark4j6ac6gto/migerufufadugipogufigi.pdf
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160aa417575985---vunafewufuwuwavovezofa.pdf
    • http://adance0112.com/upfile/editor/file/fupugojuxorolutirefe.pdf
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3ee1822c7---ruliveka.pdf
    • http://buergerforum-tirol.at/file/8416147389.pdf
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce81ae76d9---bozag.pdf
    • http://duoctruongxuan.vn/userfiles/image/file/bevejawafonozotixedovuka.pdf
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160805c6c77525---bozemaxafove.pdf
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160869906d121e---dosumojarikat.pdf
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/16084b06fa18cf---93561631408.pdf
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/160812b09114e7---60525720593.pdf
    • http://cooleywestbrook.com/clients/865832/File/51040133714.pdf
    • https://holocaustresearch.pl/nowy/photo/file/61139675067.pdf
    • http://parkhigh65.com/clients/4970/File/70291419899.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=oraciones+con+sustantivo+adjetivo+verbo+pronombre+y+articulo
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec8e.bin
9edbc53c57de42c2bf64eb45179bda16467216dabbe66f623e01d91b04792605
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8E 17824 bytes
font_01_sfnt_off00011a13.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A13 16792 bytes
font_02_sfnt_off0001322a.bin
b772a202d0c8948ce4871bd33e0f4246141e1ed77e2603ac4b1e560f93b6d9e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1322A 11248 bytes