Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a7d06802ed73aa7…

MALICIOUS

PDF

80.0 KB Created: 2021-03-20 19:17:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 7b0610aab12cc6a7ad2d2f16c0390369 SHA-1: 81d9f48e20442debe16ed5f0f354f88c714a92ec SHA-256: 6a7d06802ed73aa726c93a9c705912d4998aa8bfae9a4fd81dc1497df6dac06f
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting, suggesting a link farm or SEO spam operation. The ClamAV detection and ML classifier indicate malicious intent, specifically identified as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to be a lure related to economic topics, likely intended to redirect users to malicious or phishing content hosted on the numerous extracted URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6404

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://gimoguvi.ru/strik?utm_term=what+are+the+advantages+and+disadvantages+of+a+capitalist+economy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464734/normal_6039247eefc9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390643/normal_60268ea82267b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464323/normal_6051e3190ebd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_601814a6b7e6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369191/normal_60216f952125e.pdfIn PDF document text
    • http://keksik24.ru/how_to_change_time_on_casio_watch_alarm_chronouhcp6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402252/normal_5ffd9967673ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466411/normal_5fcdaa768f167.pdfIn PDF document text
    • http://livethailand.fun/quad_bike_hill_climb_racinggnhrj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425010/normal_605070ebb0e75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369323/normal_603198649276b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501027/normal_5fee72ed5e57f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421056/normal_6028027ca37bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420602/normal_602f9e13cdc37.pdfIn PDF document text
    • https://jateredadiwez.weebly.com/uploads/1/3/1/6/131606262/gixolejov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422147/normal_6051b07680853.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_60489f015ca32.pdfIn PDF document text
    • https://pudijeda.weebly.com/uploads/1/3/4/5/134586696/vekewanonuxuvid_wokuzixepizije_sexalirojava_wurigefa.pdfIn PDF document text
    • https://lawejuja.weebly.com/uploads/1/3/0/7/130740077/jobifagimipupi.pdfIn PDF document text
    • https://xavodujur.weebly.com/uploads/1/3/5/9/135972692/jisuzi_tefobadebok_bikasarofafopiw_vuduvuxejabubo.pdfIn PDF document text
    • http://pasendapp.online/knives_crash_mod_apk_unlimited_gemsxiq8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420244/normal_5ff4eb66f01fe.pdfIn PDF document text
    • https://fedofiri.weebly.com/uploads/1/3/2/6/132681193/2149305.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379217/normal_60053c45304c5.pdfIn PDF document text
    • http://euroshopme.site/mavonolaniznrud2.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A17 5744 bytes
SHA-256: 1675f7b99d9320f8dc0c70c6636fa6f7b16c441749722332b04958aad1deeb97

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