Malicious PDF — malware analysis report

Static analysis result for SHA-256 42e47b63012a0b71…

MALICIOUS

PDF

70.3 KB Created: 2021-02-02 17:49:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6dd88c7765c36de62861f80ec8fb619c SHA-1: fdc7925447e8c572923ef051a7f0548522f9d7c3 SHA-256: 42e47b63012a0b7181216be3fb7106fb9cdf88534912b66b88f245c5961bf2f3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://jottigo.ru/123?utm_term=pwc+strategy%2526+internship PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402533/normal_5fd0afcb01155.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385198/normal_600ff5cccf41a.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/diheJH1/fiteketonirajamakati.pdfIn PDF document text
    • https://cdn.sqhk.co/mepapogivoma/jhjVlij/74944372055.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471488/normal_60109057c0603.pdfIn PDF document text
    • http://vofuvomo.iblogger.org/ceviche_one_font_free.pdfIn PDF document text
    • http://sawotawigusewon.22web.org/toxelumovopaladekimiwoda.pdfIn PDF document text
    • https://cdn.sqhk.co/damukowabij/eKchfRU/70439062431.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/dalava/supisi.pdfIn PDF document text
    • http://losikamadan.epizy.com/cheque_em_branco_dublado.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/85043600481.pdfIn PDF document text
    • http://lokokojorivumi.rf.gd/3550704479.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/business_model_canvas_value_proposition.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/gizupagobenirixera.pdfIn PDF document text
    • http://zakivijojinikij.epizy.com/edit_text_macbook.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_off0000d63b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD63B 5128 bytes
SHA-256: 4132283a39d423948a12638959ade6db3e5b4be8111c4fcc02c7de43bc6e61a5
font_01_sfnt_off0000e7d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D7 10876 bytes
SHA-256: 0017f39b30babecc560d733fd4c28b42870187b6ae0f91f407fb20dad5be5650