Malicious PDF — malware analysis report

Static analysis result for SHA-256 c15068085ce4cd8c…

MALICIOUS

PDF

92.0 KB Created: 2021-08-06 23:11:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 4500ac12fea175836ed79c186291e7eb SHA-1: 3c70289f7dc5a0002505c81f5043961d688709f7 SHA-256: c15068085ce4cd8cf56d94c0902f063bb8af68dde88b9b67cd974517b3ada705
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to compromised CMS upload storage and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URI heuristics point towards techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://red-adlay.com/upload/files/zomolalixipikibanigowufu.pdf In PDF document text
    • http://polenes.cl/userfiles/file/rezonuduvelolobaxo.pdfIn PDF document text
    • http://aaykpn.com/uploads/editor/files/mepupizaluvulisixuvewawu.pdfIn PDF document text
    • http://jhroseclassof77.com/clients/45984/File/zelologude.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16090f5da2b33c---warowewavulatifulafapuzaj.pdfIn PDF document text
    • http://chinalabware.net/d/files/tamurasoba.pdfIn PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/7hjogun6dst0v6nk1v2bk707l7/22024682940.pdfIn PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/6d0vlil0cochc2j50fk4mirie7/rosanurugip.pdfIn PDF document text
    • https://areicon.com/images/file/jezenorilunexugesuk.pdfIn PDF document text
    • http://restravel.ru/ckfinder/userfiles/files/68357384401.pdfIn PDF document text
    • http://osstemcardiotec.com/files/fckeditor/file/68763651960f84057df78d.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1608652cdd5dc3---72727920276.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/407b5a82193c086a412cb55ae44f55a0/patugikavide.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160947da75e054---xaborekavoje.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160887d9259e5f---1162837198.pdfIn PDF document text
    • http://157.230.241.115/image/upload/File/xebapuni.pdfPDF link annotation
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca8661f627---fuditino.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de056b18ec5---fonomodatatovufire.pdfIn PDF document text
    • https://sinhadventure.com/uploads/file/64764660839.pdfIn PDF document text
    • https://tecnibat.net/uploads/archivos/88200133514.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160869efbc159f---97090912703.pdfIn PDF document text
    • http://jorkurojus.com/userfiles/file/bovagibimupobetin.pdfIn PDF document text
    • http://compsult.net/userfiles/file/rawifuxikokoneveterekebu.pdfIn PDF document text
    • http://thesnowmanicecream.com/ckfinder/userfiles/files/gudazub.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=hajj+journey+to+the+heart+of+islam+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_off0001046f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1046F 16960 bytes
SHA-256: 13f48b5459b7bb5f21c1a56fb1d42e30b29884e01d0278b3f5821a6bde156fe6
font_01_sfnt_off000130a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130A7 11100 bytes
SHA-256: edb268949666830e32a6ecb408e63d24e9f6ac8ca3f06e490bcf1d1d73ba790d
font_02_sfnt_off00014a40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A40 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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