Malicious PDF — malware analysis report

Static analysis result for SHA-256 474b1d747fc41ce2…

MALICIOUS

PDF

95.3 KB Created: 2021-07-18 05:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 1aa731e8d58221651abaa5b1868a5c10 SHA-1: 924400529741a952bd5f19cfe6dd369f8d281872 SHA-256: 474b1d747fc41ce2a61cef0ab15a4370dae4ab9f6012de0c79e1e99102bb0f41
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for Pdf.Phishing.Trojan. The file contains a link farm pointing to numerous external domains, many of which appear to be compromised or disposable hosting. The primary purpose seems to be directing users to potentially malicious content hosted on these sites, possibly for phishing or SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

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 http://asckhn.com/acskhn/userfiles/file/mikonokudarosami.pdf In PDF document text
    • http://uticahighclassof78.com/clients/8/89/89c70e22fe5ad1405280b455f64975d7/File/suwoxugumipuvaj.pdfIn PDF document text
    • https://aquamedicasatumare.ro/ckfinder/userfiles/files/47076573665.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609227d1cc53f---36540461288.pdfIn PDF document text
    • http://elcampoeco.org/FCKeditor/file/20167091750.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1f5f5efb14---83516171803.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094d717c9d85---63123459822.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b1b2544d1d---54310219615.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608c084d7bfe2---45155014723.pdfIn PDF document text
    • https://studiorampinelli.com/file/dakokopoxuman.pdfIn PDF document text
    • http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16094265eb11dd---42610760676.pdfIn PDF document text
    • http://carsongrad75.com/clients/3/35/35717660c32d3dd9b0ffde8f33a19d23/File/jirowosadokajagivafu.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/tqvlljd12qphu59n86mdqcoi25/57273560381.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160b49925359a7---perepilazopagewalonemu.pdfIn PDF document text
    • http://wumag.pl/userfiles/file/45849382059.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607b75f246bf8---99857126888.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8e94b278d---79701483910.pdfIn PDF document text
    • http://gld-lining.com/user_img/files/3926542069.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/no22a3jaqehlgq2bddau6tu592/safuvabaxufon.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2fb626b696---93909278171.pdfIn PDF document text
    • http://fonnepal.org/userfiles/file/72543886880.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=disavow+search+consolePDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE8 17724 bytes
SHA-256: abc517943c91d337f98e4accd44b616a27e7b0dd4c64a0f7461ce288a40db8b6
font_01_sfnt_off00012ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AB9 10380 bytes
SHA-256: b046f8e0255c31e698d0eac7ff373f5978be83496bfb640b83fa54b3b5a25ba6
font_02_sfnt_off00014227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14227 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00015a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A38 16132 bytes
SHA-256: eb83fb48a2f60ac59fad768156047f025764cad4052c8f34695a9c8dd2456ad8

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