Malicious PDF — malware analysis report

Static analysis result for SHA-256 365bb3df64daf9c8…

MALICIOUS

PDF

68.4 KB Created: 2021-02-12 14:41:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 443d9261a902ccb20599bfc3a867c3ec SHA-1: 7960a391634ae644c1fa5997952027ae4b208b2e SHA-256: 365bb3df64daf9c87f068b8e582aaecd681dcb47aac8913c85f5f5c2bf899ecc
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://bologen.ru/wix?keyword=crate+and+barrel+arc+floor+lamp PDF link annotation
    • https://cdn.sqhk.co/gukawaki/jLg0Rii/mawusotufedox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420451/normal_602020b330f25.pdfIn PDF document text
    • http://sdorovie-sustavi.xyz/23209633072pqmw5.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/ghic9to/16308143928.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530846/normal_5fe66cfe66262.pdfIn PDF document text
    • https://cdn.sqhk.co/begazopego/shdIsjN/jibuzozeziwozok.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolaseja/GhgQgjE/71199911706.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421208/normal_5fdd62944932d.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/ruzaganog/ienumerable_to_array_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/26517528158.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/lvl_70_gear_guide_ffxiv.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/call_of_duty_2_for_free.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/vasewik.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/camscanner_apk_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/call_of_duty_3_pc_compressed.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_off0000ce8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE8C 5168 bytes
SHA-256: 4445e562f36e79fb978e8557af45295ecc192e70fe5e9de6f58fef4ba09adeb7
font_01_sfnt_off0000e006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE006 10676 bytes
SHA-256: b308c7b5bb6ac5b0c6cb087fc3fca2523ed695b16676a574c2c1577b10ca8631