Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ac11c062edff255…

MALICIOUS

PDF

75.2 KB Created: 2021-02-13 06:26:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 76b7c71b13d6d53244943d52d7f081f8 SHA-1: 75a4113d5badc10c994123cb3d5d953d103e7110 SHA-256: 5ac11c062edff255b0dc23b54f64c08444534399223a1f3ce8a514716cfe02d7
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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/shook?utm_term=twisted+metal+ps4+game PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4506063/normal_5fcf0cf5beb02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495265/normal_5fc7a8ceafc96.pdfIn PDF document text
    • http://future-techno.ru/android_10_para_xiaomi_redmi_note_7spm8p.pdfIn PDF document text
    • http://funseeds.site/google_groups_question_and_answer_forum57l38.pdfIn PDF document text
    • https://cdn.sqhk.co/dutedape/ggjgjhR/15911002256.pdfIn PDF document text
    • https://cdn.sqhk.co/taxeseta/heehbdo/zudawor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391008/normal_6004517db65a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488141/normal_601cdce9d0ccb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495685/normal_5fcc20e21e52b.pdfIn PDF document text
    • http://iranianvc.com/letusubajetuzijobo25og6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366976/normal_5fc9e683b6388.pdfIn PDF document text
    • http://rukozhop-guide.com/blink_xt2_owners_manualt1x5o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385231/normal_5ff7559a9d227.pdfIn PDF document text
    • https://cdn.sqhk.co/sobilowibid/e8hfsib/super_adventure_box_world_1_zone_2_chest.pdfIn PDF document text
    • http://reduslim-officialsite.site/5713035678706gbg.pdfIn PDF document text
    • http://ighelperscenter.com/school_office_assistant_interview_questions_and_answers0qk5t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384640/normal_6001011b8336e.pdfIn PDF document text
    • http://bufo.online/pojajevuvul9rsjy.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_off0000e784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE784 5312 bytes
SHA-256: a082291a8aa1c9ab9ce3702150b7b8022d4b360b882a3b2c7cb1df9ce6e801bd
font_01_sfnt_off0000f999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF999 10824 bytes
SHA-256: d4127044c55fb6fc847c1eadb56861515dc2e4511356f64e996bfa749952e9e1