Malicious PDF — malware analysis report

Static analysis result for SHA-256 23c3a7aeba1b201e…

MALICIOUS

PDF

70.8 KB Created: 2021-02-15 12:03:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2b36c36ad6b4f0e4613027097167d32e SHA-1: f20fed4678a38f7b9de504f3928052dafdba8b4b SHA-256: 23c3a7aeba1b201e52f259b1ae85eeb7d01e730167793bc02246717da42240c0
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/123?utm_term=what+are+all+the+marvel+movies+in+order+of+release PDF link annotation
    • http://claire-irk.ru/ohmeda_biliblanket_meter_ii_service_manualz1r7m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379851/normal_5fea1e3fb95be.pdfIn PDF document text
    • http://detonic-ro.website/mogekego51678.pdfIn PDF document text
    • http://mp4.design/nufogoniwawonomaxu96hx5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365584/normal_5fde8dc3607dc.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/tomaxade/11162986216.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/cellofan_vst_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/xisarezawodobu.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/55670375336.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/32449663520.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/lokijolasirorade.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/indeed_graphic_design_assessment_answers.pdfIn PDF document text
    • http://tegiledo.epizy.com/24430349770.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/sujekinirorevoboze.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/string_theory_for_dummies_free.pdfIn PDF document text
    • http://rigirulame.epizy.com/endocrine_society_transgender_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/image_background_remover_free.pdfIn PDF document text
    • http://kevusej.epizy.com/jatavufoxuzikev.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_off0000d8fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8FD 5220 bytes
SHA-256: 8272cda38d92ee52be669092ebcabb2ffa1cb407ec685e52e6c47218c4d1a9ba
font_01_sfnt_off0000eaa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA3 10376 bytes
SHA-256: 6a7352590870207855b388d57ddacadc176839695206a253e32dd5c6bff55e35