Malicious PDF — malware analysis report

Static analysis result for SHA-256 6999850f984d3725…

MALICIOUS

PDF

69.9 KB Created: 2021-01-11 09:35:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 719b9b046a5916d70c29707c0d1914fe SHA-1: 9a3cd620bc4c6637bb607496c17e0708059937dc SHA-256: 6999850f984d37256555bbecc547ec503681fea3f48cd81fb2d963a3b153644a
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 ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous external URLs pointing to disposable hosting services and potentially malicious content. The embedded URLs suggest an attempt to redirect users to phishing sites or download further malware, aligning with the characteristics of a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9777

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffi.ru/aws?utm_term=directed+writing+informal+letter+spm+2012 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368971/normal_5fc238c7955d0.pdfIn PDF document text
    • https://cdn.sqhk.co/kurafuso/4ihsjdE/blaze_tv_app_samsung_smart_tv.pdfIn PDF document text
    • https://site-1172347.mozfiles.com/files/1172347/universe_sandbox_2_free_online.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ramugimexixepaba.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/9945460.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378386/normal_5fd2674ff2857.pdfIn PDF document text
    • https://site-1178773.mozfiles.com/files/1178773/flying_birds_gif_free_download.pdfIn PDF document text
    • https://jivixetikuzi.weebly.com/uploads/1/3/4/7/134745571/vekibaxut_puxididitudiw_zijelipuve_lamuk.pdfIn PDF document text
    • https://site-1225924.mozfiles.com/files/1225924/xadikupadem.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/eJJchcS/27300493741.pdfIn PDF document text
    • https://nelemiken.weebly.com/uploads/1/3/4/7/134704654/jufenawu_gisaz.pdfIn PDF document text
    • https://site-1084156.mozfiles.com/files/1084156/47127449736.pdfIn PDF document text
    • https://pewovorawegoxuv.weebly.com/uploads/1/3/4/3/134351704/finonef_melibunamuzudo_tomul.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
    • https://s3.amazonaws.com/dobesogum/39148356123.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/free_movies_hd_2019_app.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_off0000d4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BB 5680 bytes
SHA-256: f2e77dc6df902d4400822e19262299f9b79332535f761748f8786da0a744a91c
font_01_sfnt_off0000e813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE813 10644 bytes
SHA-256: 5912ba1480cacaf272b636baed6fe76c7424c217d8c8f23a74f4c551370839c2
font_02_sfnt_off00010c6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C6B 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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