Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6d8581459391cef…

MALICIOUS

PDF

73.6 KB Created: 2021-03-01 08:37:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: dba30a741ad85f7aeeccbcd6b830fa61 SHA-1: 7ad5b7eeb5618aa2a83c8ec800615c5ad6d3962c SHA-256: c6d8581459391cef8423c2c1220da9b6caaf825f82da233f301a39c23e62d667
184 Risk Score
Tags
free-cdn-ebook-manual-lure

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, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to distribute malware or phish users. The document body, though heavily obfuscated, contains metadata related to 'cold mountain book sparknotes' and 'wkhtmltopdf', hinting at a lure for specific content. The presence of numerous external URIs and a link farm heuristic strongly supports the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9803

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/award?keyword=cold+mountain+book+sparknotes PDF link annotation
    • http://babobekoru.66ghz.com/vedevobikobubojuw.pdfIn PDF document text
    • https://zuwizogagotajal.weebly.com/uploads/1/3/4/0/134012426/sixipi.pdfIn PDF document text
    • https://tipuzivi.weebly.com/uploads/1/3/0/9/130969377/lorujodavojeruje.pdfIn PDF document text
    • https://tinutenuku.weebly.com/uploads/1/3/4/6/134664278/remixiwojup.pdfIn PDF document text
    • https://filudatobo.weebly.com/uploads/1/3/2/6/132681654/tidanaligukelux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469841/normal_6018cc8211012.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368221/normal_5fef3ac3e4b3b.pdfIn PDF document text
    • https://worojipe.weebly.com/uploads/1/3/1/3/131382243/609112.pdfIn PDF document text
    • http://bijatutolime.iblogger.org/lodojafobodekekol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504554/normal_5fd6add620363.pdfIn PDF document text
    • http://reduslim-buy.site/is_cain_and_abel_illegalrqhb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376878/normal_6023c172c613a.pdfIn PDF document text
    • https://xofofafe.weebly.com/uploads/1/3/1/4/131438501/2045820.pdfIn PDF document text
    • https://vatovuturok.weebly.com/uploads/1/3/1/8/131856009/gumapavu_ziwikon_wizubar_degenapul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://wasaxotudulolo.epizy.com/vetekowowinofuto.pdfIn PDF document text
    • http://ninovaxabax.epizy.com/deliremufikija.pdfIn PDF document text
    • http://fiwepive.rf.gd/palaruredarapasomubeli.pdfIn PDF document text
    • http://panawokel.epizy.com/body_boss_workout_free.pdfIn PDF document text
    • http://piserujirabubam.epizy.com/video_maker_free_software_full_version.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e75a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE75A 5216 bytes
SHA-256: 836428330e4f71a0cd986916b5efbb635f4b8232809f5dc7d113dc69fd8bfd3e
font_01_sfnt_off0000f8f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F5 10440 bytes
SHA-256: 3b493b349c64b89898a54c9df10693d8a413444a793a9824c566c20a69dbe5b0
font_02_sfnt_off00011cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CAE 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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