Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a32a09537a7bffd…

MALICIOUS

PDF

69.8 KB Created: 2021-03-02 02:40:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 15706d779edcbdc8d2cc3c78f8a9cabc SHA-1: 85e35d9bf057b0cf9d843c20a47a720c0b85e12c SHA-256: 0a32a09537a7bffd22c87f75c03c9651d65e30f143f78431511732a51e1da4ed
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=amazon+kindle+apk+for+android+2.3 PDF link annotation
    • https://cdn.sqhk.co/pelopuxi/jf9m9ES/towemajabovowine.pdfIn PDF document text
    • https://cdn.sqhk.co/rojozedofaf/hV4uVia/zetagapututuvibebuzok.pdfIn PDF document text
    • http://vaxiliwu.medianewsonline.com/boviwokiratake.pdfIn PDF document text
    • https://cdn.sqhk.co/limexofure/ZbkziiR/15810610654.pdfIn PDF document text
    • https://cdn.sqhk.co/xadeviro/jcZhbYx/redfin_san_diego_92128.pdfIn PDF document text
    • https://cdn.sqhk.co/nidaruzada/e0aihha/pickaxe_of_earth_and_song_best_perks.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/R0Fheii/hopeless_3_dark_hollow_earth_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/peluxisomex/6gfueI6/53783527945.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409244/normal_5fee1d01e04e8.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/kelukakeb/73290869082.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/pizuvepatedabop.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/81310069076.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_off0000d422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD422 5440 bytes
SHA-256: 2ec735b97e78f790d8b73dbb7678a05ab524398ae8179bff5559904a0d7ebe90
font_01_sfnt_off0000e6a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A0 10532 bytes
SHA-256: ae7a0a0124ddb4bab5e2f96f34eff82a94e67b012905b941105e3cae9a034e13