Malicious PDF — malware analysis report

Static analysis result for SHA-256 4956085053f8f018…

MALICIOUS

PDF

73.2 KB Created: 2021-02-25 22:58:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b738486fa1aa88ecceaa7b94f3e150b3 SHA-1: c20b909cead9cc52b13b74414adce13e7fe28120 SHA-256: 4956085053f8f018b73ac88d5eddad4e3f6a8d1329ba2796b92c55248f6e8ccd
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=how+to+install+shower+door+bottom+guide PDF link annotation
    • https://cdn.sqhk.co/sadebupunen/5aihFhf/november_2020_calendar_with_holidays_canada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489245/normal_6028ba6491229.pdfIn PDF document text
    • https://cdn.sqhk.co/xejadukoxeta/Zifih6i/pocket_stables_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sotisajen/gfJidjd/94915032717.pdfIn PDF document text
    • https://cdn.sqhk.co/tevunufoba/Zyeid8F/lojenitibovoxuwofu.pdfIn PDF document text
    • https://cdn.sqhk.co/wevujawej/gePja9r/19877128556.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://womopemi.epizy.com/35035074823.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/difference_between_average_velocity_and_uniform_velocity.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/nodosowozezemuwen.pdfIn PDF document text
    • http://xamawesurasido.epizy.com/puses.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/delaware_secretary_of_state_foreign_annual_report.pdfIn PDF document text
    • http://rabibunipidozok.epizy.com/happy_birthday_image_for_lover.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_off0000e291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE291 5432 bytes
SHA-256: 4343467346ec2443a791d2cc1e7527c2e3b1e94c4fd8fe0fc727165cb6fa8236
font_01_sfnt_off0000f4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E7 10352 bytes
SHA-256: 2b96dc9cc76b56cd1edb5b7e5eff55a870c5c383795204a09c2bb0fdd901699b