Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4634f7d5f5a42f2…

MALICIOUS

PDF

68.9 KB Created: 2021-02-12 21:06:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 03155c41b2a89850d7dc46c6f35d07ee SHA-1: 7f2f32a97bd37a27fad84695cc4c0bfcbaa4f5be SHA-256: e4634f7d5f5a42f2bd76c3f77e097df287292bec7f96f4a40281e305ebdb61cf
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/wix?keyword=sb+game+hacker+apk+download+latest+version PDF link annotation
    • https://cdn.sqhk.co/wimedizi/ww7gghd/wudedavaxopizem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480589/normal_600502d74a75d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465270/normal_5fe4386e53feb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484805/normal_5fc5c8f29606e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382639/normal_6021f8a537297.pdfIn PDF document text
    • https://cdn.sqhk.co/barugogip/igicujj/wudal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380700/normal_5fd3265f8b124.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470400/normal_5fe1170547be3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461744/normal_6022bae62efd9.pdfIn PDF document text
    • https://cdn.sqhk.co/wusakituzu/LSje9hc/voxunogezitebamopaxobami.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379736/normal_6011b64d017ea.pdfIn PDF document text
    • https://cdn.sqhk.co/tunuviju/gdZbxpI/13240644543.pdfIn PDF document text
    • https://cdn.sqhk.co/perikowep/3XiaijC/54108181822.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/wIgiig6/zadesolo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lukarimavelo.epizy.com/vatafupegenadelenilo.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_off0000cfa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA3 5948 bytes
SHA-256: b040a0e41c26d7d795266c22c41465232a3aa5a3758cd972f1301f0259c22e38
font_01_sfnt_off0000e3cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CC 10124 bytes
SHA-256: 5ff6206c667bdf3a5c595052055e5a0177077f0dddf69f635868b4aecfdd6947