Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fa1c2cdae80263f…

MALICIOUS

PDF

67.9 KB Created: 2021-06-22 13:56:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 9bc969e37e972498bde46e65ecaa2d7f SHA-1: cc71d97c5dbcf30099beda6eac63915cb27c8e53 SHA-256: 7fa1c2cdae80263f8cb1dc0d8430d84456a6fcaa5dbc1f9e62e6748eeb743755
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains metadata related to 'Tom and Jerry lost dragon full movie' and wkhtmltopdf, indicating a potential lure to attract users to malicious content. The presence of external URIs and link farms points towards an attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pixomot.ru/uplcv?utm_term=tom+and+jerry+lost+dragon+full+movie PDF link annotation
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e20d040e8---mejasine.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/qen8fidf2o9gf5g6au99t21oac/47217190884.pdfIn PDF document text
    • http://aite-materials.com/upfiles/file/59299744772.pdfIn PDF document text
    • https://nabsangram.com/userfiles/file/wowoxatozifuv.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae88b81013c---21306874856.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/fc0eb76d5a3112748de52f56a2de374a/23609092566.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/9b03fe8d9d479411d3a34cec8a86816e/kegorosijumineko.pdfIn PDF document text
    • http://tribo.kz/userfiles/File/lixutep.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/82618312315.pdfIn PDF document text
    • http://khiconghoixuancong.com/Khicong/admin/userfiles/file/36573466104.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb7c6426a7---sasijubix.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/oqjlhahrtkt7ue7lco2fpq2262/62652522217.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160739d542bdd9---gujozisusozuzadunotegoba.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160979157dcd96---25901071141.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609a4e28f2018---kukebezuvumefetezixibepuf.pdfIn PDF document text
    • http://thesecurityguardunion.ca/userfiles/files/dolika.pdfIn PDF document text
    • http://hondasushi.com/uploads/files/26745395751.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/j2oihln2dqppsjrivuo2khgj52/xamobufijas.pdfIn PDF document text
    • http://ash-graphy.com/userfiles/file/46359996226.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000caa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA6 5412 bytes
SHA-256: 20f0829537df1e3613f70118c4db2de59f1942a5ff11e8d56c1eb2e4b6cb4813
font_01_sfnt_off0000dd10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD10 10988 bytes
SHA-256: 17ca3f54fb3bab45d2d88168315931ffb17d58a37db1f905332cefae627aba9b