Malicious PDF — malware analysis report

Static analysis result for SHA-256 d97d1ff4643e8f25…

MALICIOUS

PDF

81.5 KB Created: 2021-09-04 06:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 53ceb1e199c5527d032022a709254321 SHA-1: 6715104ceb9dbdc4d4160ab85de089684667423b SHA-256: d97d1ff4643e8f257f4ec50a26815be0e1db9bb16193b360603066e6517eab7d
156 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many hosted on potentially compromised or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The document body is heavily obfuscated and unreadable, providing no direct content clues.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://fantasymusic.it/userfiles/files/32926689159.pdf In PDF document text
    • https://glbtrader.com/userfiles/file/gisokolefajuzorovadebu.pdfIn PDF document text
    • http://studioboscono.it/userfiles/files/moxizuzusekotoxagebubafu.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c4cc542e7ac---guwugulinukedomaradorafiz.pdfIn PDF document text
    • http://tuvanluatdanang.com/upload/ck/files/92459314529.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/5208f51c698f4aca88c56d33034a1a52/nijijofi.pdfIn PDF document text
    • https://portalbime.com/UploadedFiles/New/file/43762350805.pdfIn PDF document text
    • http://srihemkuntschoolint.com/slbdavbatala/userfiles/file/vokatitefi.pdfIn PDF document text
    • http://riverbendhay.com/clients/4/4e/4e1cbd84181290ddb66fb035c9950ff6/File/36233744535.pdfIn PDF document text
    • http://cnpair.com/userfiles/file/12591246149.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad8fe5ce2cd---17482763428.pdfIn PDF document text
    • https://arendic.cl/files/wajifezogovexo.pdfIn PDF document text
    • http://szsahsh.com/uploads/files/415120853.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ac22d95302c---komelavuzivimel.pdfIn PDF document text
    • https://kop-trans.pl/uploads/userfiles/files/vonugiwofavin.pdfIn PDF document text
    • http://ahdongjiu.com/upload_fck/file/2021-5-2/20210502050503290619.pdfIn PDF document text
    • https://renhedc.com/uploads/files/202108181428186796.pdfIn PDF document text
    • https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/c8a0b080a33d88986948ad975ffabd15/59076816057.pdfIn PDF document text
    • https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160be8679bdfee---81882947005.pdfIn PDF document text
    • http://anhuizpyy.com/upload_fck/file/2021-6-5/20210605114307476931.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/c85195c099ff56badcf0053887d97b49/wakafemilaxi.pdfIn PDF document text
    • http://autodilykanka.cz/cmsimple/images/file/nejadafasibubarapexejifa.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/96hqfea96rq3t1u28ob0dr17p3/nulijifuzexufalalafutute.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=manualidades+slime+con+maizenaPDF 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_off0000d8a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A0 18404 bytes
SHA-256: 969bae02793d0a7806f535eea608c0f5670b0c7df6d313569cbe39db14fdce84
font_01_sfnt_off000108f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F0 10484 bytes
SHA-256: 640f24db40f54687512e9e7c487ace4a8c5ed1248268542fca503edffb30fbd7
font_02_sfnt_off000120b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120B7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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