Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed3e22ae9466d2dc…

MALICIOUS

PDF

88.7 KB Created: 2021-09-01 15:07:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 7e1e19f222e171bd14cf6abeb8e66066 SHA-1: dce9d49f4b66343728e1c32392c57bd99eb845b2 SHA-256: ed3e22ae9466d2dc5937be7df4bd8d28c91ba6b50fb46e2ab9d9fc34e3051570
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://angarakshaksecurity.com/userfiles/file/38741258473.pdf In PDF document text
    • http://abarappresentanze.it/userfiles/files/nafowonujefujoteda.pdfIn PDF document text
    • http://brezov-gaj.si/uporabnik/file/24538914649.pdfIn PDF document text
    • http://www.masozilina.sk/ckfinder/userfiles/files/seloxabusinosawi.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607b31974902d---vemadivupezojotirole.pdfIn PDF document text
    • https://hglobaltourb2c.com/FileData/ckfinder/files/20210610_761CB5461772913A.pdfIn PDF document text
    • http://extracam.es/app/webroot/arxius/file/bixonade.pdfIn PDF document text
    • http://zonweringbelgie.be/ckfinder/userfiles/files/visevex.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079130b19bb1---91127349249.pdfIn PDF document text
    • https://dutchfansitenetwork.nl/ckfinder/userfiles/files/22750304073.pdfIn PDF document text
    • http://shipsupply.ru/userfiles/files/deduvogaw.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc681365079---dikesozibegererojaduzebap.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee18b9c0784---zaguluferimoju.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/16075dacf8313f---nofixopa.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c1a66f00f66---33922766972.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607c10b16a439---zofebesa.pdfIn PDF document text
    • https://atl-50.com/files/file/merudabaturozetadubokilut.pdfIn PDF document text
    • http://x04ydivan.ru/userfiles/file/soxonibazasorolirod.pdfIn PDF document text
    • http://vietdubai.com/userfiles/file/55358993301.pdfIn PDF document text
    • https://eletmodguru.hu/files/files/vugokosokorokiwomapipen.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/5hpkd3j2gpalfp9qmlun1pgqbd/36688158152.pdfIn PDF document text
    • https://leesman.com/wp-content/plugins/super-forms/uploads/php/files/27f522e3a520963166c7b048744b1a4e/85166658484.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f056d3379a---28874276606.pdfIn PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/bcd6ec6212e6818df96e7512ba3f93cf/17406182907.pdfIn PDF document text
    • http://www.vandiestbrandstoffen.be/uploads/files/18981678295.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=live+stream+football+apps+for+androidPDF 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_off0000f4ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE5 10824 bytes
SHA-256: cd1dd3ef846939a893ed51690f46ffd8d32005a96a0a5265f0cbac6e3b8ebc79
font_02_sfnt_off000125a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125A0 17964 bytes
SHA-256: da203d517a4bed6cea6506451936124f153773037ca90fbc62d4ee342a085b84

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