Malicious PDF — malware analysis report

Static analysis result for SHA-256 e30ac260c0a9866b…

MALICIOUS

PDF

89.5 KB Created: 2021-08-20 15:19:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-16
MD5: e326f8827c35c9dea9b4913b2ead59d4 SHA-1: e0738fbf679336b7bac2fd4f44457ec8a858af3b SHA-256: e30ac260c0a9866ba2baf939d21217236ddfec9e30eb98eaf1c5712539fbc60f
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of 'utm_term' parameters in some URLs indicates a potential phishing or SEO manipulation campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://synerhu.ru/uplcv?utm_term=marvel+vs+street+fighter+ps1+move+list PDF link annotation
    • http://michaelwilliamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/disijidukoforasedage.pdfIn PDF document text
    • https://lesartsdansmonjardin.com/userfiles/file/20210603034720.pdfIn PDF document text
    • http://metamorfoza-krosno.pl/userfiles/file/74094566519.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/ggvpqfmqnqmri7uri58a5hia68/94447713754.pdfIn PDF document text
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/b669c3aaa80bf444f9ba1756ca2a7cb5/75239800097.pdfIn PDF document text
    • https://ddshower.com/ckfinder/userfiles/files/43289549300.pdfIn PDF document text
    • http://longarmacademy.net/fckeditor/userfiles/file/49822058746.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/6ad95495a8ee4248f028e52c1798c959/dezovo.pdfIn PDF document text
    • https://ehotelgateway.com/bot/ckfinder/uf/files/68482429038.pdfIn PDF document text
    • http://cl-pub.com/files/files/89672719176.pdfIn PDF document text
    • https://bluetact.com/locktactyuma/userfiles/file/43317878078.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/d5aff0a0e7bf908d9cb1d6582e608c51/dijovenar.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095a549122db---tesubuzezawigoj.pdfIn PDF document text
    • https://carcarnet.com/home/sandbox/domains/hkdance.tritek.hk/public_html/ckfinder/userfiles/files/93634773629.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160727bcf848f4---wujoregipumi.pdfIn PDF document text
    • http://madveras.com/ckfinder/userfiles/files/sejom.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/towakit.pdfIn PDF document text
    • https://museos.comarcadelasierradealbarracin.es/ckfinder/userfiles/files/64683848820.pdfIn PDF document text
    • https://geneolock.com/locktactyuma/userfiles/file/51495658829.pdfIn PDF document text
    • http://apvn.info/userfiles/file/mamoz.pdfIn PDF document text
    • https://vydavatelstvoklett.sk/userfiles/file/96469624288.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/d35d14c16a6a7f508a39b44011a645fd/23856306307.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f45f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45F 10812 bytes
SHA-256: b5f73fab29c32e69eebf2250d850b2d9b6136fda720fff26a64b35230b87135a
font_01_sfnt_off00010d62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D62 19712 bytes
SHA-256: 36061b7cbdb85920ca8003af4c7f23659cfcb2eacf5f276f2bf9f78018929411
font_02_sfnt_off0001400d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1400D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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