Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbbe1e634ded5b91…

MALICIOUS

PDF

95.6 KB Created: 2021-06-17 18:12:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 4abfe6767fd4e28e1a8912cb69e1f383 SHA-1: f54aee2ac3139d7dd5dab8ba3dfd4b63d17f6692 SHA-256: dbbe1e634ded5b9150fe2defaadfd0c3819520397e27b9f0ec55f7d0b9c2bc47
154 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 pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6697

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://drafthe.ru/uplcv?utm_term=vishnumaya+sahasranamam+pdf PDF link annotation
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/a6c5fbb09588af6aa2ae7b6b2140bfea/89096595309.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160985f916267a---gizikujex.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608e918f5f7e6---powewamapedus.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/54aae22e6d079d3afe5f5bc5a25182d2/87320898407.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/be996ppl70nj48qtjcai7b46l8/fasiposatetanigigef.pdfIn PDF document text
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/64ad3e85b9c78516c612d93a2f5ec8ce/jebekufinexek.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a88e087e56---41060690802.pdfIn PDF document text
    • https://bonpetsupply.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090eb665aa4b---mudisimigafikev.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160701a7651e17---52244072088.pdfIn PDF document text
    • http://xn--80akazwaeiw.xn--p1ai/editorfiles/file/72737268118.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/160984d1728a43---takinalakimibigotiran.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d34b169b51---45861139962.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/2ee4deff80a1688428e8d53f74bbb412/gegitezidewerumigel.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/77518523196.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096b38653d1d---97192543820.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbd6087bdd---12879025971.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00015b80.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x15B80 13823 bytes
SHA-256: 5ce01da5fec9ddffd268e0f18d56ab56a1470271497db89541cc1f276f961f13
font_00_sfnt_off00011fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FAB 5316 bytes
SHA-256: db6ccb41a30f28c0a0cc332ee4191cab6bec92f024a265183f0fa6d7d0be9106
font_01_sfnt_off0001319e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1319E 13312 bytes
SHA-256: bed444be0742a32b6ee8be43ef0531081f40ace28d3ca34b096dec73edb82277

Open this report in the interactive analyzer, or submit your own file for analysis.