Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0dd1239a1f294ee…

MALICIOUS

PDF

84.2 KB Created: 2021-09-06 18:05:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 6a3374b42d5781ee043ea3c68ef4e8ec SHA-1: de6197f01e02573a6d2c25930156a2ee1a3cba50 SHA-256: e0dd1239a1f294ee99a58d83e0598cbda3b5f89174a8bba528cda33e63f26466
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of links, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 http://boxshop.mn/userfiles/files/vizukil.pdf In PDF document text
    • http://delve-cr.com/uploads/lawijumibo.pdfIn PDF document text
    • http://arc-en-cielproduce.com/ckfinder/userfiles/files/regovesevotube.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/b29c3c8ee2857ff5d4e4780b30ad3e14/46691819363.pdfIn PDF document text
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/cdde0e750e94d9ff7085e162f7a04f73/73631392111.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/ephemmjq07u643uvp3s8093d7s/58814184787.pdfIn PDF document text
    • https://searchlink.org/userfiles/file/fapepajunibigowigizadiwad.pdfIn PDF document text
    • http://color-gateway.com/userfiles/file/53773619991.pdfIn PDF document text
    • https://gelblighting.com/userfiles/files/97292380060.pdfIn PDF document text
    • http://pensionpoint.cz/userfiles/files/tomoredumusasumov.pdfIn PDF document text
    • http://thermocomfort.ca/userfiles/file/natepegujefazob.pdfIn PDF document text
    • https://civilkontroll.hu/uploads/file/xawafopodagamebalid.pdfIn PDF document text
    • http://rootbeadmill.com/upload_fck/file/2021-8-30/20210830232615264618.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/uii780k7iuesatjcfavqdgd791/25947363529.pdfIn PDF document text
    • https://diamond-marketing.cz/soubory/58259810045.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abf96abf5e0---71918020252.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092a4a112bc7---mulaveji.pdfIn PDF document text
    • http://clean-ecology.com/Upload/files/gemebuwijo.pdfIn PDF document text
    • http://i-daa-wl.de/userfiles/50188559545.pdfIn PDF document text
    • http://karat-dobremiasto.pl/userfiles/file/30592519936.pdfIn PDF document text
    • http://gardenofsound.com/userfiles/files/wevev.pdfIn PDF document text
    • https://www.educationsexuelle-ecole.ch/ck/ckfinder/userfiles/files/xakiga.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=rational+canonical+form+pdfPDF 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_off0000e001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE001 10524 bytes
SHA-256: d1c352a264d5e56e21cac3397c39cbd240dc64bb9fc8d2134554213d1d9d2d79
font_01_sfnt_off0000f7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EC 19648 bytes
SHA-256: 4758aefc6bc5d0de630a0a3405d0556d23ebb5226ddd770d4d3816c41748a1c2
font_02_sfnt_off00012b71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B71 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1