Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcce8617e6af6fb1…

MALICIOUS

PDF

79.8 KB Created: 2021-02-05 05:07:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: aa3eb64494f5e4bc34ae1ee4ed797be0 SHA-1: 5c6d39b459f3dd70724ec9f4edefe60bc8dd8ddb SHA-256: fcce8617e6af6fb1ff414c1c06834ea5117139e7945d4ab2cc86df624d078659
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://jottigo.ru/wb?keyword=binder%20android%20example PDF link annotation
    • http://eduha.online/17406958023iy1re.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418972/normal_601c6fd4a9dd9.pdfIn PDF document text
    • http://lenudes.com/scerts_assessment_forms1sftz.pdfIn PDF document text
    • http://mosquito.codes/bikedelojutajusuzsjx5.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/gje4jgW/next_raid_boss_after_heatran_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413370/normal_6013c08fe4978.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492250/normal_6007058721207.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475209/normal_5ffc5533b5232.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369632/normal_6015e4c98d016.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/pisedij/basic_resignation_letter_template_nz.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/tabudivajapufafewis.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/80986117188.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/facebook_apk_for_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/epigenetics_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/72057851849.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_off0000fa43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA43 5044 bytes
SHA-256: cee28323e5eee91ecd5f0fb165e8f4180882adb818ffef09d42d6bbe457ca349
font_01_sfnt_off00010b56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B56 11508 bytes
SHA-256: 4943bc04d80c38e67ba1e355261f9f151701ea5c3bcb1acf49b0b7f73391b545