Malicious PDF — malware analysis report

Static analysis result for SHA-256 a84654c9936e00f0…

MALICIOUS

PDF

77.2 KB Created: 2021-02-02 10:03:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e11e71a3b0b34153a830c466b19b52d9 SHA-1: 85e6d795efe49b597a23547f3eca9892973e297a SHA-256: a84654c9936e00f0e7a3cf027afc89f6e27fc961577863b4cf907d38b725ab5b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://jacksth.ru/aws?utm_term=cloud+devops+engineer+interview+questions+and+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406169/normal_5fdb387d55cad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489259/normal_5ff6732532ccf.pdfIn PDF document text
    • http://securityverifiedservices.com/power_electronics_notes_free_downloadkff4t.pdfIn PDF document text
    • https://cdn.sqhk.co/motuwezelu/UgewCgd/68833372776.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379477/normal_6017cf6b5d65d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390664/normal_5ffb5f7ea8d8e.pdfIn PDF document text
    • https://cdn.sqhk.co/josurowelimu/wicX3ie/sonic_boom_wellness_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366045/normal_600b3c109e55e.pdfIn PDF document text
    • http://hiziryigit.online/gibixoa8w71.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxezitowefi/hdAp9Wo/pajijaduwipipufarerumukem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501364/normal_600abee22ddd3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426270/normal_600453d136441.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487419/normal_5ff7aa4c52085.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459629/normal_5ff89c1c61b09.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jimugivos/appareil_digestif_cours_infirmier.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/91855606335.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/pdf_to_word_online_free_instant.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/12454021850.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C6 5308 bytes
SHA-256: d0fea36afdb76177eb6dfc14164fa5876da3f8dde91d0c0b3c4cd09d6cfc4a5b
font_01_sfnt_off000103e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E9 10464 bytes
SHA-256: 6ab42e30868dc9a22855d6f35480a93b5a5735949fe8a7e6a8802f82a945dd3f