Malicious PDF — malware analysis report

Static analysis result for SHA-256 387db38b74eca324…

MALICIOUS

PDF

45.5 KB Created: 2020-11-05 20:05:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: fbe45d66da9117cf6569102cc1bff90d SHA-1: 1bf5280e3d7408099c1026da4dc7f5d8d298968e SHA-256: 387db38b74eca3243cf9f92748c293d3440d155f13706280f98dd2bd3bf22a68
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=definitionado+answers+level+10 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381102/normal_5f92587e248c3.pdfIn PDF document text
    • https://lidenezat.weebly.com/uploads/1/3/4/3/134382714/kivovev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417809/normal_5f9c9a6676a51.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/femaperuxezitiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369503/normal_5f8fda79ea3b8.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/fikuvine/disuxixexojo.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/blue_rhino_griddle_walmart.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/710_credit_score_personal_loan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fab26def-f3cd-4fa1-a65e-bebf6060221f/61034805924.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/sintomas_de_anemia_falciforme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b620407-6fb4-48ba-8707-3385976be66f/82669801925.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a538106-7c53-40a4-9bcc-6248d42ed15e/zuzuwozafekutu.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/download_avg_secure_vpn_premium_apk.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_off000063c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C5 5248 bytes
SHA-256: 7cd0eb81867793a668415fd8aeab56df8c5c7ebeef2c6a42733c7a47b4aefc5b
font_01_sfnt_off000075c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C9 1912 bytes
SHA-256: 5ffeb62cc735427a844e4fc30fe3f408afa3be4b10dd737b69049c1a099b5cd9
font_02_sfnt_off00007ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF6 12952 bytes
SHA-256: 6e1649b20046e937cd4f0d5f193857598bb5ac1fbab9df6af5408b8c8103c304