Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa7d01cb56e53a76…

MALICIOUS

PDF

51.5 KB Created: 2020-11-08 12:13:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: e07a4a56d1546ef4d91ceb59c3e56de7 SHA-1: 27d7ee210168adf45f6a0d275f9166f2d144871b SHA-256: aa7d01cb56e53a7619fa202cf7660b3be2657026391a7e2add1dd0d1549068ab
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://trafffe.ru/aws?keyword=waterfalls+in+kansas+city+mo PDF link annotation
    • https://maxuvejalova.weebly.com/uploads/1/3/4/2/134265339/lepezosepek.pdfIn PDF document text
    • https://suranetu.weebly.com/uploads/1/3/4/4/134458043/mojewidogaz_pitabaji_kurep_zuxizafufev.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/vobifaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/090a9f7c-edb0-462d-ba96-25902d537a07/viking_theater_decorah_showtimes.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiwovowus/nawixujutodofarudo.pdfIn PDF document text
    • https://vevadiwo.files.wordpress.com/2020/11/watch_mrs_doubtfire_online_free_full.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/taxalizuge.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/kewekez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92dacea5-ce3c-4c97-98a3-9b9d1b04d5bf/68123112405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51d9f42e-918d-4ecd-8748-8703d541806c/beduvatejipesunuviw.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_off00008138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8138 5204 bytes
SHA-256: 3ad0862825fa38f9ce26626ee0ebfd694a955fa4d451cd7c2b8bf23b26f79121
font_01_sfnt_off000092e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92E8 1872 bytes
SHA-256: d84d133f8be175c41a9a30ca74c194ff4552f1bd6589e6972d6457ca5359e694
font_02_sfnt_off00009bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD7 10876 bytes
SHA-256: 67987565940567b857d022ea3e6ee498106917c6b25608e70c75754998193bb7