Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc4178012ff221a5…

MALICIOUS

PDF

61.7 KB Created: 2020-11-08 11:31:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 5e9a50b33215f3f9e99bf8391c36bc4b SHA-1: f46c5846ee6365ae1714a24aeafd27c61579b5ec SHA-256: cc4178012ff221a50cffc6865eb298d79f0038bc958770cde80a532031520551
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://trafffi.ru/aws?keyword=spiderman+games+unblocked+google+sites PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385850/normal_5f8fe827c05f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481402/normal_5fa75172951d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371790/normal_5fa6b3e63d86f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f89285d7c91e.pdfIn PDF document text
    • https://giruveme.weebly.com/uploads/1/3/4/4/134480937/9a1fd3266ab599a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375704/normal_5f8e9b69ae9d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://gunajuluk.files.wordpress.com/2020/11/18862362581.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be631b81-1966-40cf-a1bf-ed2b6e3faf71/kirimo.pdfIn PDF document text
    • https://jopafez.files.wordpress.com/2020/11/zezigidoxupavafijilafaroj.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/hipoglucemiantes_orales.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/atrial_flutter_treatment.pdfIn PDF document text
    • https://maxetibepuli.files.wordpress.com/2020/11/straight_outta_compton_full_movie_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/dapiserasasodow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c35113e1-f31a-443f-841e-7eba00d7f164/56981697492.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/flooring_saw_skil.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3F2 5584 bytes
SHA-256: f865cabd01b5c715fa916492efdeeded2873a0caa2f7a323038e68d73aa4531a
font_01_sfnt_off0000b6c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6C2 10672 bytes
SHA-256: e36d4c0efbeee48bd5417830133047ba7342fce3bac2ecaa933af93ddd79e703
font_02_sfnt_off0000db1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1E 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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