Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c06e8a84bc6024…

MALICIOUS

PDF

80.7 KB Created: 2021-09-03 04:48:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 38060e939b8196db74aa545ab724b93b SHA-1: c76d65d7212771b67b9b410ae6e679a5c1273807 SHA-256: e9c06e8a84bc602495f36ef946c0f8f08e89809f0e48e3f7b8e7364cd34da6cd
156 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics as containing a link farm, with several URLs pointing to compromised CMS uploads and disposable hosting. The ML classifier and ClamAV also identified the file as malicious, specifically as a phishing trojan. The presence of numerous links suggests an attempt to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://santeh.md/img/files/85364759037.pdf In PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/979u6tihfv5cspkr8medrllagd/tibuzefeb.pdfIn PDF document text
    • http://primaria-ciocirlia.ro/media/file/bisogu.pdfIn PDF document text
    • http://kelvista.lt/images/files/zagofujama.pdfIn PDF document text
    • http://mitsubishilongbien.vn/images/ckeditor/files/74889497010.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a445e830ced---vifutedofunidimumutuv.pdfIn PDF document text
    • http://sonkertrail.org/clients/9/92/9260a3c387aed4615f72c72c3a1da295/File/zipabidanurarar.pdfIn PDF document text
    • http://tuzvedo.hu/elemek/file/niraxafikewubadebaxun.pdfIn PDF document text
    • http://cocoon-source-harmonie.fr/public/file/26808378154.pdfIn PDF document text
    • https://brs.jo/userfiles/files/buzasa.pdfIn PDF document text
    • http://tuzvedo.hu/elemek/file/46487886433.pdfIn PDF document text
    • https://stef-nancy.fr/upload/document/68642367314.pdfIn PDF document text
    • http://laiyi-art.com/userfiles/file/81740215554.pdfIn PDF document text
    • http://mutitar.com/user_img/files/66315413597.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8bf5918248---69701450981.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/ba7d8tjfl6kiav58h3t94adgl5/giromemokupupatosikokonuj.pdfIn PDF document text
    • http://esebtekstil.com/resimler/files/xevovemefekugalim.pdfIn PDF document text
    • http://pi-consulting.ch/download/93007494137.pdfIn PDF document text
    • http://tznjl.com/userfiles/files/61787516179.pdfIn PDF document text
    • http://citra.cl/userfiles/file/pukekofad.pdfIn PDF document text
    • http://t-p-fortune.com/userfiles/file/noratomebafe.pdfIn PDF document text
    • https://aronabritcan.com/userfiles/file/redejojaw.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb89114c1d2---22014849332.pdfIn PDF document text
    • http://mgtofubbq.com/uploads/files/soxupemafaxaka.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/a7061c2f28f16f768f6bb1249b54e661/nuvogitike.pdfIn PDF document text
    • http://renovfab-menuiserie.com/userfiles/file/joduwolubesuf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=free+english+reading+worksheets+for+grade+1PDF 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_off0000d830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD830 16928 bytes
SHA-256: 512e3e773a4077513fc14ce39c07cc0bc9017f468ba078968171ba751136fd30
font_01_sfnt_off000103c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C6 10840 bytes
SHA-256: 2a26a1de50651d2c92ecdcfa88a77fc356b8534c0979cdfe0f51983c5f2ae8dd
font_02_sfnt_off00011c98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C98 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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