Malicious PDF — malware analysis report

Static analysis result for SHA-256 f097ae6ab11e6335…

MALICIOUS

PDF

49.4 KB Created: 2020-10-26 22:02:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 5197c33b2c1b060f802c8c456bff7dc5 SHA-1: 3001451a240858c318264deafe8b0f6b018e7ca6 SHA-256: f097ae6ab11e6335bde7d3c3ceeae81184e6aecbc786c2e8a448349de4b4b04e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://ttraff.me/123?keyword=endless+love+book+pdf In PDF document text
    • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/5400212.pdfIn PDF document text
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/6d2893fb5c7593d.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/pokobu-pidoror-pekirez.pdfIn PDF document text
    • https://sonujesenusa.weebly.com/uploads/1/3/4/3/134344018/3813202.pdfIn PDF document text
    • https://rutobugexamaxip.weebly.com/uploads/1/3/4/5/134508198/5208610.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/xusaxog_tabipox_potorobakude_milulogufasabof.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/zetare/13532444985.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/pexezavanizipikomomovur.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/xexokofiwotatuvel.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/begenusivaputajiralozez.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/extraocular_muscles_anatomy.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/2543634588.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/certificados_de_calidad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/374d90b7-a4db-46c2-baff-d91dfbde2f4f/tefigipupa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61512fb7-60b5-4a27-ab78-7cd8ade96e4b/bakisovixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/397ccf69-6ca0-4152-91e8-ae6b66d12c33/89732194674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb509c9f-4947-49aa-95dd-4f996aa8b91e/sofufokasabupasur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85dad90c-ea1c-4c82-b415-4a20c40ccb5d/jofidigelodebukegow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab9c54e2-3a1e-42ac-842b-daa71ce49f15/8234260731.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d2814fa-b45a-4e86-b032-0bceeef8043f/19496523505.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_off00008037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8037 4952 bytes
SHA-256: fd84a9c15b724fca0e730a0ae11d24cddc0b71fd2002f0b277b75b36ea759a9f
font_01_sfnt_off0000912c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x912C 11344 bytes
SHA-256: a1817e677814093fee50feb38347c5201c586bf2b8717c3192b0369d46a79f24

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