Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f54526ef68dafa…

MALICIOUS

PDF

80.1 KB Created: 2021-09-21 23:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 2bfb8cad64a3551c162e2a7c9d58e9de SHA-1: b468e5008f723b426ec0208abe8d539e490f9f25 SHA-256: 95f54526ef68dafac010a9333595454940750e5364d655c4a5ce66d4f1ff8438
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to domains associated with link farms or potentially malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://location-appartement-venise.com/italie_documents/files/dixivagunafub.pdf In PDF document text
    • http://zdravi-kromeriz.cz/files/file/nojoziwifedevobavodu.pdfIn PDF document text
    • http://onlineauadms.com/ci/userfiles/files/95137120177.pdfIn PDF document text
    • http://bratislava.topenglish.sk/app/webroot/gallery/files/3363071864.pdfIn PDF document text
    • http://prepearl.com/uploadsfile/solabadivewusu.pdfIn PDF document text
    • https://12waktu.com/contents/files/42785235330.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/58350276769.pdfIn PDF document text
    • https://jamisonfurnace.ca/userfiles/files/54355568886.pdfIn PDF document text
    • https://stvietnam.net/luutru/files/tomixovetaxuwepatewe.pdfIn PDF document text
    • https://easternresources.net/ckfinder/userfiles/files/fosusujoviwavawijow.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/63de1d37162c6dcfca7e2c2ce061ed5a/vezevajesuzipigevizuzure.pdfIn PDF document text
    • https://www.andreivieru.com/ckfinder/userfiles/files/5989289315.pdfIn PDF document text
    • http://smingames.com/ckfinder/files/13052736042.pdfIn PDF document text
    • http://henskeschildersbedrijf.nl/upload/benisakogizasofamiva.pdfIn PDF document text
    • http://thomas-zigon.de/images/file/36830857133.pdfIn PDF document text
    • http://unsersohn.ch/images/file/mumowamowuxitu.pdfIn PDF document text
    • http://kurier48.pl/files/userfiles/file/17513225281.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/90862606836.pdfIn PDF document text
    • http://hoteldanang.com/uploads/images/files/kefabu.pdfIn PDF document text
    • http://wish-pharma.com/upload/files/83892898355.pdfIn PDF document text
    • http://leasingtowers.com/ckfinder/userfiles/files/11222221129.pdfIn PDF document text
    • http://iqlacpro.vn/emotive/upload/files/33652671882.pdfIn PDF document text
    • https://shindah.com/images/ckeditor_img/files/dizemov.pdfIn PDF document text
    • https://estatecambodia.com/htdocs/cljr/data/files/4648818992.pdfIn PDF document text
    • http://gvs-russia.ru/admin/ckfinder/userfiles/files/91360946242.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/e90322f0675af3b914db8c740484dd2a/30744797345.pdfIn PDF document text
    • https://thucphamtruongxanh.com/Upload/files/55581711053.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=define+composite+number+with+examplePDF 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_off0000d2d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D4 11172 bytes
SHA-256: 198813462c6b3ceeffe63cb227d39f8fae7328c4b8c18428a574b611a30b7075
font_01_sfnt_off0000ec9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9F 17720 bytes
SHA-256: 9d4306a91e609fb20deed7aec1e174a647dce689edbe5163c0a1e55f5aee9815
font_02_sfnt_off00011ace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ACE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1