Malicious PDF — malware analysis report

Static analysis result for SHA-256 8475128883db3516…

MALICIOUS

PDF

72.9 KB Created: 2021-02-20 09:02:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1b11db13845823225e2a0c8950426ba1 SHA-1: 5c9efce7e1c4f8a163d6604af67b3166738a8b79 SHA-256: 8475128883db3516ec823afb8a8af1287da96ec5c7073bb32f9e5717a773f75d
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/wix?keyword=unblocked+66+ez+tunnel+rush PDF link annotation
    • https://cdn.sqhk.co/satasevubu/oWif6gs/letirepetasaworukuv.pdfIn PDF document text
    • https://cdn.sqhk.co/losiluja/5qzXgcc/printable_solar_system_planets_to_scale.pdfIn PDF document text
    • https://cdn.sqhk.co/kunimanujage/jabkEsu/teruvoviv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412158/normal_5ff080f583f1c.pdfIn PDF document text
    • http://ogranifruit.space/50681828105w1iz5.pdfIn PDF document text
    • http://dezlice.ru/kinudepazetiv1am5i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452851/normal_5fd0d47a81e72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478415/normal_5fdba31a053e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393485/normal_602f59786e058.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385437/normal_5fe81f58e4000.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461498/normal_6011f3c542fb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450251/normal_5fd839a4a53e8.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/qdwljix/revuzerogeposigitukaf.pdfIn PDF document text
    • http://detonic-ordina.website/76128777454jp5fg.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E8 4100 bytes
SHA-256: a291743f754afc112c89be6544ed4ee5491a486daa25b1fce2e42a61286e5316
font_01_sfnt_off0000e272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE272 5216 bytes
SHA-256: 7ef9018a4fed407488b228379db5a1f0b83cf5d079ce7ef09b974ff1a01b1cbc
font_02_sfnt_off0000f432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF432 10028 bytes
SHA-256: 4095d340f98629e7dd1986be8376675aed23e8ca2e2ba84eae1c04ada2135faf