Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a21283d027f4605…

MALICIOUS

PDF

73.1 KB Created: 2021-02-12 09:02:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2bce6fa75311bbed55416dc70a47bfad SHA-1: 12e53495ed4b07d7170404857f82a9157bcc6c29 SHA-256: 3a21283d027f4605eaf0f63d58a2c991e8e000198db9197c7a045512a19cdf71
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://maypoin.ru/wix?keyword=real+drift+full+apk+money PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470224/normal_5ff3107d23b03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403824/normal_5fd103ab4cc08.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375352/normal_5fca2eae808c5.pdfIn PDF document text
    • http://beremoter.online/free_emotional_afro_beat_download3xiw4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416805/normal_5fe8f4350a718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444357/normal_601e44afed169.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366344/normal_5fceb9ecb3d24.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450419/normal_5fefd200b545e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479210/normal_5ff366510d7b4.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/napoledunadigo/interview_questions_and_answers_for_financial_manager.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/asian_drama_for_ipad.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/susuwisora.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/45731751165.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_off0000e1ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1EF 5180 bytes
SHA-256: 2b74d6e68e38fa387d3b5a8be44b89c74dd6903957ef3f82da14e477ffb6d572
font_01_sfnt_off0000f38c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38C 10672 bytes
SHA-256: 6153e32789c5bcf960581c497617b67b0d5e1370fdc32d853d4f371b34a3e55d