Malicious PDF — malware analysis report

Static analysis result for SHA-256 024e96c0c254a81b…

MALICIOUS

PDF

82.4 KB Created: 2021-09-15 17:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: e8b5541768baf9a627d1b0bf22d28e0e SHA-1: 28999a2ad8ca9db8c36b895b839b9af61092171d SHA-256: 024e96c0c254a81b6e26614c606391c5b8a897f60802b9f2b68f80e1862dca44
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. It also features a link farm pointing to various domains, some of which appear to be compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.plain-pied.com/editeur/ckfinder/userfiles/files/sewegugoluxuxamujovotep.pdf In PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/513490irqqsve4bnfbjhsu6doo/32203618932.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b86e8027bf---semipokajawogofojole.pdfIn PDF document text
    • https://qualityroofinnandsuites.com/nbloom/fckuploads/file/kevumevazawikego.pdfIn PDF document text
    • http://sashtraayurveda.com/ckfinder/userfiles/files/70943823159.pdfIn PDF document text
    • https://myparrotfood.com/user_files/files/62522748029.pdfIn PDF document text
    • http://dispensapertutti.com/userfiles/files/41297661976.pdfIn PDF document text
    • https://virker-ikke.dk/files/47769681890.pdfIn PDF document text
    • https://consurs.ro/ckfinder/userfiles/files/dadowevosejunonim.pdfIn PDF document text
    • http://budka39.ru/files/42024112747.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613281dd67a27---wisugubisejewisir.pdfIn PDF document text
    • https://faktxeber.ru/resimler/files/75569375617.pdfIn PDF document text
    • http://goldenmallbiotech.com/upload/files/suxafuxu.pdfIn PDF document text
    • http://manilag.com/FileData/ckfinder/files/20210906_961B084C7ECF3019.pdfIn PDF document text
    • http://divyabodhanam.org/userfiles/file/82295854726.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161317e0c0212b---devisekikakijemaxajutog.pdfIn PDF document text
    • http://china-baby-clothes.com/d/files/xewularapozukogi.pdfIn PDF document text
    • https://techson-cctv.com/upload/file/81868420724.pdfIn PDF document text
    • http://www.schule.havonix.com/ckfinder/userfiles/files/57294314090.pdfIn PDF document text
    • http://bilcafe.it/userfiles/file/26686008633.pdfIn PDF document text
    • http://knuhpharm.kr/userfiles/file/20210906065059.pdfIn PDF document text
    • http://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/70216014159.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=fast+heartbeat+and+dizzinessPDF 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_off0000dee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE1 18048 bytes
SHA-256: 213996c1134bc20faf5d3cd66bed085c84b0df13040e9cd5625379260db4827a
font_01_sfnt_off00010d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D09 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12520 10356 bytes
SHA-256: 7976da2903dfd7001ea73b8cd81d128f255dda0f1e64296047ab6fc31542825a

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