Malicious PDF — malware analysis report

Static analysis result for SHA-256 062e047f680e5240…

MALICIOUS

PDF

76.1 KB Created: 2021-10-05 22:59:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 588c8c3af22c4e76e530920371339d64 SHA-1: 28513f33f60a00ef4d65c2783ddf60a4af4f69e1 SHA-256: 062e047f680e524099f4ddddc9f21297eeae198a66cd0e579e7bc53d1e58d6cd
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged as a link farm. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to redirect users to potentially malicious sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://foto-klub.dk/userfiles/file/kokatovexobafajixi.pdf In PDF document text
    • http://quiltingacademy.com/fckeditor/userfiles/file/ludolegutiwitonusiketir.pdfIn PDF document text
    • http://saatgaamkansarasamaj.com/admin/uploads/files/levaxopoboduvajom.pdfIn PDF document text
    • http://annabarons.lv/files/files/dipajilito.pdfIn PDF document text
    • http://studiolauramoschini.it/userfiles/files/95855366102.pdfIn PDF document text
    • http://ikcem.org/userfiles/file///romudanebuluzisoz.pdfIn PDF document text
    • http://tdsns.ru/userfiles/file/zofogezuretef.pdfIn PDF document text
    • https://estudiowebcolombia.com/ckfinder/userfiles/files/68955450563.pdfIn PDF document text
    • http://tearose-kitchen.com/sites/default/files/images/imcefile/paduzavinosuxoped.pdfIn PDF document text
    • http://fohow77.ru/upload/file/ritifeguvexoxisa.pdfIn PDF document text
    • http://goldendazzle.com/upload/quangtri/files/31002467556.pdfIn PDF document text
    • https://www.auto-ecole-acm.com/ckfinder/userfiles/files/93129522081.pdfIn PDF document text
    • http://fittbikese.hu/files/file/zonawuxapasogivaxovelav.pdfIn PDF document text
    • https://underworldgear.com/upload/users/files/57231214744.pdfIn PDF document text
    • http://venusland.vn/app/webroot/img/files/59761388927.pdfIn PDF document text
    • http://vistobrasil.net/uploads/file/25800200547.pdfIn PDF document text
    • http://king-tableware.com/uploads/files/202109091621229512.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/161541544112f6---97947693850.pdfIn PDF document text
    • http://grandp.ru/userfiles/file/33042940952.pdfIn PDF document text
    • https://zlato-eu.cz/upload/files/87651619401.pdfIn PDF document text
    • http://weiken-rc.com/upload/files/86320002436.pdfIn PDF document text
    • http://wawa757.com/uploads/files/2743211254.pdfIn PDF document text
    • http://privateeducation.sg/verzsape/demo/upload/admin/files/pinagutubo.pdfIn PDF document text
    • http://managhantasala.net/mailuserfiles/file/87001208403.pdfIn PDF document text
    • http://kondicionery-ivanteevka.ru/upload_picture/file/68736140995.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=2500+dollars+in+rupeesPDF 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_off0000c2c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDADE 10668 bytes
SHA-256: 638006b16b902c550eb767efd075f45cb4918711d63dc00674fd7f527fe2ec23
font_02_sfnt_off0000f360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF360 18232 bytes
SHA-256: 879019eb9fe193c6388ed4fadc8833c0b97a31ba55ca390555dc2a8014987942