Malicious PDF — malware analysis report

Static analysis result for SHA-256 60be69b699f7f9ec…

MALICIOUS

PDF

81.7 KB Created: 2021-09-06 03:25:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: d7f4e63d4a0d1c1d5c92167fdca49754 SHA-1: c8be57bc01de97f2c8595336539374425320fa28 SHA-256: 60be69b699f7f9ecee52372af8de0c5d2790609326f6ed31f8fbee6de6dade4c
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It functions as a link farm, containing numerous URLs that point to potentially compromised websites or disposable hosting. The primary purpose appears to be directing users to external resources, likely for phishing or to download further malicious content.

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 https://huntic.ru/uplcv?utm_term=la+masseria+delle+allodole+libro+pdf PDF link annotation
    • https://ssekolkata.com/ckfinder/userfiles/files/55441691613.pdfIn PDF document text
    • https://urbanlivin.lu/userfiles/files/16427960108.pdfIn PDF document text
    • http://kardelendalgicpompa.com/uploadfiles/file/pibosonerakoxubosuleban.pdfIn PDF document text
    • http://exosushi.com/uploads/files/fomerujite.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/9f21f95b0e1e7d27f31dfc341c8b77a6/gomakilelodefexuwipe.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161351ac02c7b7---serovewejopabovovevider.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607211c14e728---80949549869.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/ce1f7e5d219258602c3d006efe7e802e/89875317929.pdfIn PDF document text
    • http://jandebruijn.com/uploadimages/files/23255177414.pdfIn PDF document text
    • http://autohondl.cz/userfiles/file/fetol.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b45244702---saxasanifodusudugevolew.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/ral1s84luv5pa8b257libnd5f6/rapewilujebumetajaje.pdfIn PDF document text
    • http://omatsuri.kr/data/userfiles/files/gasofejokawifem.pdfIn PDF document text
    • http://status-go.net/gfx/userfiles/files/28931153959.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/topovobiseniberabarisedaj.pdfIn PDF document text
    • https://edinburghpools.com/contents//files/fuxumujomi.pdfIn PDF document text
    • https://aldurra.ly/images-editeur/img/file/74482722366.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/da3362312bb927e22bbf124b1be7e3ca/lagabalew.pdfIn PDF document text
    • http://tccsrl.org/userfiles/files/mikewopemogexaxek.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608f35798ba1f---goputosadexi.pdfIn PDF document text
    • http://www.arborvitae.cz/ckfinder/userfiles/files/73712369292.pdfIn PDF document text
    • http://spamsmsgiare.com/media/ftp/file/1239161150.pdfIn PDF document text
    • http://montpellier-business-plan.eu/mbp/upload/images/images/upload/ckfinder/pinesufutanod.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_off0000db50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB50 10552 bytes
SHA-256: 341a67bbc9a94c442fde801813a483a0472c8d16fbdb756a88dbdf304f976cc7
font_01_sfnt_off0000f30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF30D 17660 bytes
SHA-256: 3684b58f3450541e15fed76242ca81969df9b12ad8d8c96a13bbba0e86aea1bd
font_02_sfnt_off00012141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12141 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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