Malicious PDF — malware analysis report

Static analysis result for SHA-256 0571ec34858ef73b…

MALICIOUS

PDF

70.7 KB Created: 2021-02-23 07:43:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7bd2e2266ef043f01f0c452550f69887 SHA-1: e5efc021843a3c312f03b630de64a18ac4bab325 SHA-256: 0571ec34858ef73b3ba411dfef6a27934cd2b56f161a4ab53ac1d231cac7dbf4
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wix?keyword=cool+memes+stickers PDF link annotation
    • https://cdn.sqhk.co/panafilaputu/RjiMpgh/mnemonic_dictionary_fastest_vocabulary_builder_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490125/normal_5ffdb82ec6e3e.pdfIn PDF document text
    • https://cdn.sqhk.co/junigofulum/jd5ijXT/sigasume.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393180/normal_60242f0edaa69.pdfIn PDF document text
    • http://srakan.space/fumovenodabikagonepr1iwj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451033/normal_60048c0d26973.pdfIn PDF document text
    • http://yoga-italy.space/vilovakonevabaletip422nd.pdfIn PDF document text
    • http://legendnat.space/247881294685arsu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372753/normal_5fe589960bd49.pdfIn PDF document text
    • https://cdn.sqhk.co/gewowamizes/jK69rzK/79079908983.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487381/normal_6011df3355cb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448980/normal_5fec98071f4dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369783/normal_5fd23009db2c0.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/cmgecje/nolenej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000da92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA92 4704 bytes
SHA-256: bd6f3c65de58a55e563eccda7bf2d88e07db50fcbee025d6c4bc2f5eb9c7a7bd
font_01_sfnt_off0000ea77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA77 10508 bytes
SHA-256: 02b87f871908af0c31217b9b44333dcb480afa79a1dbd2d388e154fe0db800a4