Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d101ddebdd06ba4…

MALICIOUS

PDF

88.0 KB Created: 2021-10-10 11:51:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 8964f4703a0450b87a0b2ddf0da392b2 SHA-1: 296ddbc880ab91c179fb68c91a4ad9d61841d769 SHA-256: 0d101ddebdd06ba44521dd46ade3d799e7aece4b106b30599035e48e996f1698
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farms points towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://gitedu.in/ckfinder/userfiles/files/semunumegikafoxegab.pdf In PDF document text
    • http://relaxzenter.com/uploads/files/vesekewesabevode.pdfIn PDF document text
    • https://kamarkosong.com/contents/files/tosarulunepi.pdfIn PDF document text
    • http://22vek-omsk.ru/fck_editor_files/files/13986896308.pdfIn PDF document text
    • http://urparitet.ru/admin/ckfinder/userfiles/files/3304381850.pdfIn PDF document text
    • http://supermarketdv.ru/files/file/ribirogibatevotudurapizin.pdfIn PDF document text
    • https://morethancars.eu/uploads/edytor/file/27134992856.pdfIn PDF document text
    • https://a-metal.e-giant.net/archive/file/files/69806126775.pdfIn PDF document text
    • https://maylanhgree.com/fckeditor/editor/filemanager/img.php?file=file/88537388710.pdfIn PDF document text
    • https://triatlonshop.cz/userfiles/file/92214105092.pdfIn PDF document text
    • https://armagedonspedycja.pl/files/file/sulixevidijufebu.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/o45iuscqututi2phc5qoik9hnt/90206951793.pdfIn PDF document text
    • https://h1t-url12shio-turbo.com/contents/files/20271638982.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/fa8a86fb6545ef1910575d1c6a00d3d5/72238050866.pdfIn PDF document text
    • http://damutech.kz/upload/2021/10files/211009161218877620gliyg.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/3ccdc2083bf96df14370ec394fc1502a/fuxefisosofisobipalep.pdfIn PDF document text
    • https://bloc-immo.com/images/zijemexarepefuso.pdfIn PDF document text
    • http://templeton.sk/userfiles/file/vabowunudagexodop.pdfIn PDF document text
    • https://infoenergie-loire.org/userfiles/file/31295045790.pdfIn PDF document text
    • http://makairways.in/home/makairways2017/public_html/dowalumniusa/ckfinder/userfiles/files/kabujizoxebuzinitosaf.pdfIn PDF document text
    • http://usairsprings.com/userfiles/file/derizaluzelaxopibiwamebik.pdfIn PDF document text
    • http://yuanyoujie.vip/userfiles/file/81223507075.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16150f065e17fe---likuxonudivotifupabezefow.pdfPDF link annotation
    • http://top-caster.com/userfiles/file/gifofufet.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=food+craving+meaning+in+tamilPDF 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_off0000f190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF190 19532 bytes
SHA-256: abda789f83363ba15ac6407697d73fb96e10cd6156dcdec273083fd25ecad6a9
font_01_sfnt_off00012269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12269 10588 bytes
SHA-256: e66f2caa0de886cb3daec429bd5ffd0b4d016daad51778dcc0d4f759dc3160b4
font_02_sfnt_off00013a57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A57 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1