Malicious PDF — malware analysis report

Static analysis result for SHA-256 e09a06e876664969…

MALICIOUS

PDF

86.2 KB Created: 2021-09-08 16:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 448e9cec67045c6d7392f6aef67f7b3a SHA-1: dd19003e7bfbe4caa7230743a21d7edaef890d11 SHA-256: e09a06e876664969f4f874d29381e7f4d11740810f39c1fbce6b74ca2bedbcc9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, many of which point to domains associated with compromised CMS upload storage or disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://ilyxrace.com/userfiles/files/gipewijuwaxa.pdf In PDF document text
    • http://alicekhenrylawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tebiravevubasedifutuw.pdfIn PDF document text
    • http://zonwering-belgie.com/ckfinder/userfiles/files/58351948938.pdfIn PDF document text
    • http://jeyadhurgatemple.com/userfiles/file/zarasipologoxanapigenugu.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1612f26ca75549---64561233593.pdfIn PDF document text
    • http://xsteelstock.com/d/files/1036870917.pdfIn PDF document text
    • https://namphuctourist.com/userfiles/file/75526064204.pdfIn PDF document text
    • http://pilanatofishing.com/home/sandbox/domains/shelter.sandbox.tritek.hk/public_html/ckfinder/userfiles/files/reduzuwetuvoworavane.pdfIn PDF document text
    • http://tlumacz-lipno.pl/pdrzewiecki/files/kewurejetefek.pdfIn PDF document text
    • http://gearonlaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/26311238839.pdfIn PDF document text
    • https://npkfertilizerproduction.com/d/files/fokipupunaxojosub.pdfIn PDF document text
    • https://maintogelonline2.org/contents/files/kefojasukugigekegedepusir.pdfIn PDF document text
    • https://mountainbrookbuilders.com/home/mountain/public_html/ckfinder/userfiles/files/fiziguweragizu.pdfIn PDF document text
    • http://triatlonbizuterie.cz/sites/default/files/file/semuwozofapafesisuw.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136e8650dbf5---moribowekegexaluzawo.pdfIn PDF document text
    • http://fsgpj.com/upfolder/e/files/20210901095617.pdfIn PDF document text
    • http://fbrasil.com/userfiles/file///zitawevinavux.pdfIn PDF document text
    • http://rulada.by/upload/editor/files/verixubeveri.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/m03jbi5gtj86p3g8np4lpa2blf/xexiximemugu.pdfIn PDF document text
    • https://timminsrenovations.ca/file/jhi10tFdrEFuLdyd.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/52505710024.pdfIn PDF document text
    • https://piphoto.tw/uploads/files/202109030756343603.pdfIn PDF document text
    • http://newo.ru/files/files/62739483480.pdfIn PDF document text
    • http://grandviewgroupresort.com/upload/files/deramagevitamegugazan.pdfIn PDF document text
    • https://trvstore.com/userfiles/file/75667308054.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=dozakhi+by+ismat+chughtai+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_off0000e55f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE55F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD71 19396 bytes
SHA-256: dfe56932994c43d6a76a2148e24a090d2b2052e1c98703a70af98473a15b5f5c
font_02_sfnt_off00012f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F22 11192 bytes
SHA-256: fac799c7044c930e3ce2d85292444467b5ba58bd9207947e39d12ae1257dc46d

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