Malicious PDF — malware analysis report

Static analysis result for SHA-256 73770969cbbe8d86…

MALICIOUS

PDF

83.1 KB Created: 2021-09-05 03:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 3a9b4231dd1569e16e52e8f7534afeb0 SHA-1: b30dc393e68de960052aa2467d5c7964cbfc431d SHA-256: 73770969cbbe8d8637be1c3334b5e2c234df15ea6dcdae1317c0d8c5c7330a45
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, many of which are associated with compromised CMS uploads or disposable hosting, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware distribution campaign, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://medvor.ru/uplcv?utm_term=mente+subconsciente+joseph+murphy+pdf PDF link annotation
    • http://cheers-gifts.com/userfiles/fogerabepositulavad.pdfIn PDF document text
    • http://www.bash.cl/media/file/2050142311.pdfIn PDF document text
    • http://ijdssymposium.eu/upload/98752733277.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/a86772e4dd64532bcae6dfe786a8039e/32691824867.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e2e49bf8a5---22100265067.pdfIn PDF document text
    • http://z-sinpro.com/upload/files/61005281815.pdfIn PDF document text
    • http://uci.ir/userfiles/file/66816957816.pdfIn PDF document text
    • http://rileyillustration.com/images/agency/files/50623137965.pdfIn PDF document text
    • https://lesartsdansmonjardin.com/userfiles/file/20210730160941.pdfIn PDF document text
    • https://amrapalispot.com/userfiles/file/15963211824.pdfIn PDF document text
    • https://agriturismoilcolle.org/userfiles/file/xutepusalola.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c0ea0341e27---vozojinagezegux.pdfIn PDF document text
    • https://vontobel.shopbyeberli.ch/userfiles/files/tatikotekelexev.pdfIn PDF document text
    • http://ttmplus.com/userfiles/files/14829968535.pdfIn PDF document text
    • https://syntellect.ru/Repository/file/45578945864.pdfIn PDF document text
    • http://tlproduct.com/userfiles/file/97584449276.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082c95c18a00---90823131205.pdfPDF link annotation
    • http://saovietgroup.com/upload/FCK/file/75549144910.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/21540921439.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/miki4kf4743vbi3omf555dua64/vuxigivuzapewarike.pdfIn PDF document text
    • http://yuanyoujie.vip/userfiles/file/luminululiwewepo.pdfIn PDF document text
    • http://angelescare.com/userfiles/file/mijosusejolidur.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/kexigisoximusej.pdfIn PDF document text
    • http://cukierniabrzezinski.pl/www/artizam/fck/file/93088189637.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_off0000dc20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC20 18880 bytes
SHA-256: f0206008f8c874b3ec506d9907fd060c7460d779ec6013fd718e5e555d2cc52a
font_01_sfnt_off00010ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000124be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124BE 11156 bytes
SHA-256: 777211d1014d5affb685e6e4760187ac6cb6adfc7c7172988cd045937f3c5843

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