Malicious PDF — malware analysis report

Static analysis result for SHA-256 9869fe1ad1df73a3…

MALICIOUS

PDF

85.1 KB Created: 2021-10-10 22:32:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-03
MD5: bb686407f844f0d37fc87d3b36b2b906 SHA-1: 9b62dc6af579b800d4b42711ae8e58d51591ee3e SHA-256: 9869fe1ad1df73a3e4d397aabd0a6ed0d30aeb6d5fb63fdf0081bdbd8df9c0d8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to suspicious domains and are likely used to redirect users to phishing sites or download further malware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically flags the document as a link farm on disposable hosting, reinforcing the phishing or spamming nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 https://casalindasbakery.com/ckfinder/userfiles/files/8733001296.pdf In PDF document text
    • http://studiotecnicodambra.eu/userfiles/files/90963936637.pdfIn PDF document text
    • http://studionegrelli.it/userfiles/files/34117457608.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/1f87fmuonub17vctrll7k1c9cl/lipalivukivexupit.pdfIn PDF document text
    • http://buyyoutubelikes.com/ci/userfiles/files/22614535407.pdfIn PDF document text
    • http://goldenpeak.it/userfiles/files/35137492518.pdfIn PDF document text
    • http://teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/50550682821.pdfIn PDF document text
    • http://belean.pl/userfiles/file/miromituwanupafir.pdfIn PDF document text
    • http://djk-winkel.de/images/uploads/file/bavifadepemodezawajexar.pdfIn PDF document text
    • http://cermak-expo.cz/data/files/file/jimulejo.pdfIn PDF document text
    • https://christschoolblr.in/userfiles/file/xafofenazetozuro.pdfIn PDF document text
    • http://hhoasis.org/app/webroot/img/fck/file/77515549942.pdfIn PDF document text
    • https://gad-elhak.com/userfiles/file/gijifurafor.pdfIn PDF document text
    • http://casaledellasignora.it/userfiles/files/52737059611.pdfIn PDF document text
    • http://impressivetravelvietnam.com/upload/files/pozuvug.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/de93df389e1d60eba8b2ef465d94162a/pimaxudejugilidorip.pdfIn PDF document text
    • http://eco-versute.com/app/webroot/ckfinder/userfiles/files/nitogupazuzomuwewufodagip.pdfIn PDF document text
    • http://ohmamakitchen.com/uploads/files/75870114947.pdfIn PDF document text
    • http://mexvp.com/ckfinder/userfiles/files/65106099174.pdfIn PDF document text
    • https://playerpress.com/ckfinder/userfiles/files/5824964709.pdfIn PDF document text
    • http://zzzwchem.com/upload/files/94845008482.pdfIn PDF document text
    • http://modnyi-buket.ru/uploads/files/bixog.pdfIn PDF document text
    • http://halanmilk.com/upload/files/padexobi.pdfIn PDF document text
    • http://inteko-tula.ru/f/file/lobosanamevinikukoben.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=an+alien+hand+answersPDF 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_off0000eb49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB49 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001035b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1035B 17796 bytes
SHA-256: a5b14ea36a41fad02ec54bf65282161268e01e9a34c8daf1f6675ebef0f54058
font_02_sfnt_off0001301e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1301E 10192 bytes
SHA-256: 4be6164ae5a8fe6bb0c5e24360c706360a32270568d719167c5357fdcd4c7eb1

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