Malicious PDF — malware analysis report

Static analysis result for SHA-256 798f0d27c2fbdb8e…

MALICIOUS

PDF

116.6 KB Created: 2021-03-09 11:09:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: ea8ae9747e6218dac56a691382d17d02 SHA-1: 94de5402b94ad7ec9276bfe84cf2492e7a75d2e0 SHA-256: 798f0d27c2fbdb8e05cf2d3b0bc7ae31d6586c08e578cdfd61c3d87cacb7c791
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous external URIs, with a specific heuristic flagging it as a link farm on disposable hosting and another highlighting invisible links to suspicious domains. The presence of these links suggests an attempt to direct users to malicious websites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7922

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://midufefew.ru/award?keyword=les+fleurs+du+mal+baudelaire+pdf PDF link annotation
    • https://devanuwi.weebly.com/uploads/1/3/0/9/130969177/kopulaxax-dusetedimexe-bosir-toginefaluti.pdfIn PDF document text
    • http://itfamily.pro/how_much_do_chick_fil-a_assistant_managers_makelrp1g.pdfIn PDF document text
    • http://yewes.space/903918220x81kt.pdfIn PDF document text
    • http://coins24h.com/koduduxovaraxazubavgni12.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/nabojex.pdfIn PDF document text
    • http://aycotoro0.xyz/ejercicios_comparativos_y_superlativ62u0p.pdfIn PDF document text
    • https://cdn.sqhk.co/suwojixuwebi/JhcDsjd/lewekudifamulesefutik.pdfIn PDF document text
    • http://niveranat.iblogger.org/jugetunatawemanovanivi.pdfIn PDF document text
    • http://sell-toclick.online/cohen_s_effect_size_guidelinesyete1.pdfIn PDF document text
    • http://menetufebev.22web.org/68967274854.pdfIn PDF document text
    • https://cdn.sqhk.co/lotidonita/jc2g8jj/gartner_magic_quadrant_cloud_security.pdfIn PDF document text
    • http://curvepreloved.com/the_good_witchs_guideizhwj.pdfIn PDF document text
    • http://gapagal.mywebcommunity.org/u_verse_remote_insignia_codes.pdfIn PDF document text
    • http://securitycheckingbrowservkcom.xyz/roland_td_10_expansion_cardb5t1p.pdfIn PDF document text
    • http://academic-club.ru/kudetimazadawokitorexarem00fby.pdfIn PDF document text
    • http://tophomework.space/pay_my_verizon_wireless_business_bill7m5eh.pdfIn PDF document text
    • https://cdn.sqhk.co/nozelenid/LKNAjeU/happy_birthday_cake_pic_with_name_and_photo.pdfIn PDF document text
    • http://getdouche.xyz/37438606834fuqm8.pdfIn PDF document text
    • http://nitanupemil.mygamesonline.org/89048717734.pdfIn PDF document text
    • https://pedesidava.weebly.com/uploads/1/3/4/3/134355179/314261a1bde237.pdfIn PDF document text
    • http://kazaxese.epizy.com/monthly_expenses_spreadsheet_excel.pdfIn PDF document text
    • http://kepagewav.atwebpages.com/sabasagimokulul.pdfIn PDF document text
    • http://jabujiwotase.epizy.com/artefact_projects_ltd_annual_report.pdfIn PDF document text
    • http://wojibikifi.myartsonline.com/the_adoration_of_jenna_fox_wikipedia.pdfIn PDF document text

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