Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eb95131c5ece1ca…

MALICIOUS

PDF

77.6 KB Created: 2021-08-28 06:37:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: fdf5b634af4f60e90c086f510e0eb853 SHA-1: 874930a1cbb8e746b4cd491d584c41076df16c15 SHA-256: 7eb95131c5ece1ca971cc1dcd0bfa41ae9a1a33c8513c957167751fb2af31256
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains numerous embedded URLs pointing to various domains, many of which appear to be compromised WordPress sites used for hosting malicious content. The presence of 'utm_term' parameters suggests a phishing or SEO-based lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

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 https://synerhu.ru/uplcv?utm_term=streaming+justice+league+2 PDF link annotation
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/de02930afc750362dedc14d4613094b0/74874156810.pdfIn PDF document text
    • http://quiltingacademy.com/fckeditor/userfiles/file/32308271613.pdfIn PDF document text
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/00966916b9438eaf45c66f4f3599838a/23943054162.pdfIn PDF document text
    • http://saltokisport.com/uploads/files/lowijizuwem.pdfIn PDF document text
    • http://gpkoaee.ru/ckfinder/userfiles/files/kekilipazurabirosabomi.pdfIn PDF document text
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/a196df7eb69a9f833ed5e52ddc1c5412/vutimosogetilabigamujuv.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e2e66cef13---58185061925.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/10eef41be9368b0b90d0e1981ad435a1/vojovuseromabepo.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/ee7e1e4dd67d5180438f01ba9c947b88/samijolatas.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/e4acf3c64d5754619035f69d0435eaae/sizezuwanoxafisapebapej.pdfIn PDF document text
    • http://englishplanet.info/ckfinder/userfiles/files/30725768320.pdfIn PDF document text
    • https://novahealthclinic.ca/userfiles/file/rilika.pdfIn PDF document text
    • https://bamor.org/userfiles/file/28488055091.pdfIn PDF document text
    • http://gancza.pl/userfiles/file/75487270281.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/bodepi.pdfIn PDF document text
    • http://bona-agra.pl/Upload/file/89210252791.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/70310399338.pdfIn PDF document text
    • https://cfacgroup.com/uploads/FCK_files/file/13661329311.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/agqe3hqgp4ligctd3uhntsa172/8584301132.pdfIn PDF document text
    • http://mbcasc.net/imgs/file/52189235473.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160d0c3b8655eb---ruvogunax.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160922c269ad73---sakasomufifavozuxudeminir.pdfIn PDF document text
    • http://winso.tw/userfiles/file/sijojufonewebidenokisid.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/3d86ba7cfe13a60813f12507e2fe2556/lelakire.pdfIn PDF document text
    • https://honghow.com/ckfinder/userfiles/files/46042479547.pdfIn PDF document text
    • http://bvmnotarissen.nl/app/webroot/files/ckeditor_files/files/25635751649.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_off0000ca47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA47 10876 bytes
SHA-256: 2ba69b31493dcf100c48482b4565b2f164db1e09a470e3f9fe3aa1c859194d39
font_01_sfnt_off0000e363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE363 17336 bytes
SHA-256: dffb70c43a14725928088b69aed564165d8230751ba56b97bc0175d61565c4a4
font_02_sfnt_off00011030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11030 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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