Malicious PDF — malware analysis report

Static analysis result for SHA-256 be9db3b9b932cee5…

MALICIOUS

PDF

73.7 KB Created: 2021-09-04 10:35:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 35dd76e8f05fb57cc8778278b8db1802 SHA-1: 5ad5c41e702b05fc84eb54bffcd640dcc75bbdba SHA-256: be9db3b9b932cee59e4b7c0c2094f26926cc8b1dac1b38f03958a14547b0c09e
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs that point to compromised CMS uploads and disposable hosting, likely to redirect users to malicious content. The document's structure and embedded links suggest an attempt to lure users into clicking through to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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://ayurvedaemart.com/uploads/file/sutotizivuw.pdf In PDF document text
    • http://masonfamilyreunion.org/clients/b/bd/bdaf0a3c19eb5f10f0519c747c117e37/File/42268596782.pdfIn PDF document text
    • http://laweasy.kr/userfiles/file/50850475945.pdfIn PDF document text
    • http://frutapacargentina.com/ckfinder/userfiles/files/perixovadetefivelozunasij.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/f1a809b41f1b7421689ca2a2887373fc/miwosokupitukifupusixijab.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607be87685e6f---68345219358.pdfIn PDF document text
    • http://obasekiestates.com/UserFiles/file/paduzagatujerirutokevi.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609ca32b3b7f5---xuxexagefa.pdfIn PDF document text
    • https://hrmconsulting.biz/upload/files/ninabomiwitu.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/pivanatedoraguxaxaxoxelu.pdfIn PDF document text
    • http://transportdiverse.com/uploads/files/65901997905.pdfIn PDF document text
    • http://mackielaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/47472543708.pdfIn PDF document text
    • http://sibzakon.ru/ckfinder/userfiles/files/nuvikusupofapuwinazas.pdfIn PDF document text
    • https://kfk-dekoration.dk/images/uploadedimages/file/rijotekakerope.pdfIn PDF document text
    • http://stlnsk.ru/uploads/file/mesekifixesilojomix.pdfIn PDF document text
    • https://4of100churchstreet.com/assets/media/files/rowujerofobidek.pdfIn PDF document text
    • https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/2fbbe20b9708e43164cddd15c96ce66c/tajixogojogavovele.pdfIn PDF document text
    • https://bdata.vn/upload/files/sudizapeviliniresisumavep.pdfIn PDF document text
    • http://jshtextile.com/UserFiles/file///dixisawuwenajanedima.pdfIn PDF document text
    • http://travisreunion.com/clients/1/1d/1d9c560ef9ee6310b862f4c9d288d7bd/File/40460164897.pdfIn PDF document text
    • http://splogservice.ru/content/file/wukasoriwuvivulurije.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=basic+conversation+in+spanish+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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bbb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBB1 10788 bytes
SHA-256: bb793b4b7700fbed41b0272a13505397719156fd29ddb4e4ed7e05f8f430b20a
font_01_sfnt_off0000d48e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000eca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA0 17520 bytes
SHA-256: 7d5ca83ef89dc072563cb1c220fc709c405ddbd0ae91258776a6b6b701b0757a

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