Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fa25adfa0ac2570…

MALICIOUS

PDF

72.7 KB Created: 2021-02-20 14:20:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: dae73948f445f365e24c7d4b4a6c1d39 SHA-1: e0121d902f668dc678955c1647810c97a16a6742 SHA-256: 8fa25adfa0ac257085d1f102085694ba09688a794c8c2fa0821221012adb8fc4
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://jacksth.ru/wix?keyword=journey+to+the+heart+of+aikido+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392868/normal_5fe7043021dbe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493549/normal_5ff33c4cd0bd1.pdfIn PDF document text
    • https://cdn.sqhk.co/satidaruxami/iLJhgid/bts_new_songs_2020_playlist.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406466/normal_5fc7433682f80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480743/normal_5fffa98031f45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372373/normal_600cfbba2a50e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482863/normal_5fefcec676fa7.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/bokofapig/best_guided_meditation_cd_for_beginners.pdfIn PDF document text
    • http://nisogifamesada.epizy.com/ana_anticuerpos_antinucleares.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/jevimezukuzibon.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/90303605046.pdfIn PDF document text
    • http://latuwukatagowa.epizy.com/chutkule_free_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/95000241464.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/baratepij.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_off0000e2c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C6 5076 bytes
SHA-256: 8fe4ea12c2c8e6924cffc34427fa227b5eaae34fdde9d2e0d36e0ed970b16ebe
font_01_sfnt_off0000f413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF413 9956 bytes
SHA-256: 0815c0fdc987ad8b3e6904079461b17f45221fe2ccf9b53ed2b02ae8af843055