Malicious PDF — malware analysis report

Static analysis result for SHA-256 1138a245c644f15f…

MALICIOUS

PDF

69.5 KB Created: 2021-02-26 18:27:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 470a743ad17545aec3e025bf18a48b23 SHA-1: 6ce02fa3ef9a41b29090ffa89d58661d2e8c0b3e SHA-256: 1138a245c644f15f20133128d8c1f1232d499eadd75c8eb4135c1f20b873d86e
124 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 embedded URLs, many pointing to disposable domains, suggesting a link farm designed to obscure malicious destinations. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and URL patterns are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

Heuristics 4

  • 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 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://maypoin.ru/award?keyword=essentials+of+human+anatomy+and+physiology+11th+edition+online+book PDF link annotation
    • http://kopuvimu.scienceontheweb.net/vavejulenirijujoro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469103/normal_5fd0aa9453bc2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404730/normal_5ff69b14a260a.pdfIn PDF document text
    • https://turonobofudub.weebly.com/uploads/1/3/4/4/134463989/pikureno.pdfIn PDF document text
    • http://vajamerafimal.iblogger.org/cisco_linksys_ea4500_software.pdfIn PDF document text
    • http://kufafukedexepix.mygamesonline.org/51838047716.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417669/normal_5fed794391b12.pdfIn PDF document text
    • https://cdn.sqhk.co/rekosiseweno/chaibhh/51071225685.pdfIn PDF document text
    • http://wufutawolemipa.22web.org/dbx_driverack_pa2_setup_with_powered_speakers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408707/normal_5fdd692aa1714.pdfIn PDF document text
    • https://cdn.sqhk.co/zaweniwefi/sgLiajh/21833299203.pdfIn PDF document text
    • https://cdn.sqhk.co/sadebupunen/eicjfid/fijesogutexif.pdfIn PDF document text
    • https://ripafikumitepi.weebly.com/uploads/1/3/4/6/134622323/fitalasibuvinaf.pdfIn PDF document text
    • https://cdn.sqhk.co/kawinojos/ENijgdC/bass_booster_online_youtube.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/30226014975.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sonexononabon.epizy.com/how_much_is_a_2016_lexus_rx_350_worth.pdfIn PDF document text
    • http://nezeseg.epizy.com/different_types_of_market_structures_activity_3-1.pdfIn PDF document text
    • http://mifamin.epizy.com/40857270006.pdfIn PDF document text
    • http://xepalufozakot.epizy.com/aldus_pagemaker_5._0_free_windows_7.pdfIn PDF document text
    • http://bidusibebawuz.onlinewebshop.net/cuanto_es_150_gr_de_mantequilla_en_cucharadas.pdfIn PDF document text
    • http://zopefunexot.epizy.com/beyond_meat_earnings_report_forecast.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D6 5672 bytes
SHA-256: a701c7979ef143fde8dfacc592d3ab98947e72ed015908fc8a1536c3cd3a1054

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