Malicious PDF — malware analysis report

Static analysis result for SHA-256 911a714c5a187c16…

MALICIOUS

PDF

71.7 KB Created: 2021-02-10 22:57:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 429458a66afcdc50a048384cbfae6089 SHA-1: 835014154f7d88685ff5e3da1de1a02dd980845d SHA-256: 911a714c5a187c1628b9d5fea826cfe4456820c6a7d265e3b57d14055017233e
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://leonvi.ru/123?utm_term=unit+4+rna+and+transcription+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/bopelara/PN9hchd/xivovifovetajedubesu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460706/normal_5fc72cb6bdfd9.pdfIn PDF document text
    • https://cdn.sqhk.co/konafomaz/fYHghEy/jawuwu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406771/normal_6013431229b25.pdfIn PDF document text
    • https://cdn.sqhk.co/munuluxel/hegiijb/download_game_brawl_masters_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382420/normal_601615aa6b137.pdfIn PDF document text
    • https://cdn.sqhk.co/renapudovi/Hidgfgg/mijimolirofigorudi.pdfIn PDF document text
    • http://igme.site/76447176990crdsj.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/jWjekje/muxon.pdfIn PDF document text
    • https://cdn.sqhk.co/jerizukop/tjihdid/dabavogu.pdfIn PDF document text
    • https://cdn.sqhk.co/pemoxeriko/jdig7ie/21423355520.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387567/normal_600ecabe2764a.pdfIn PDF document text
    • https://cdn.sqhk.co/xeliwiwogivo/halLRih/1001_dj_tik_tok_terbaru_offline_download.pdfIn PDF document text
    • https://cdn.sqhk.co/malofavu/johfMgc/mevaxudoxamubug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466366/normal_6005fae5dd0b7.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/VChjfif/puzadezigolajugixatowuxax.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuniruf/6iahdN0/domino_s_pizza_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404969/normal_600064f84f3cc.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_off0000db32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB32 5364 bytes
SHA-256: 1e09498648d583bb7a5b00547cd42785d3c173d516307425b4db4ba67829b827
font_01_sfnt_off0000ed89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED89 10520 bytes
SHA-256: e4fcacf6fe06789e23e439d57e20389cf81464521f2502a768eef03dad2c5a17