Malicious PDF — malware analysis report

Static analysis result for SHA-256 21ec516914b66a65…

MALICIOUS

PDF

42.7 KB Created: 2020-11-07 03:17:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: f5fdeff4255f3744da044efb9c8c5983 SHA-1: cfaeedff5f0ec8d77e9ef2b0d2e7cbf4720aea89 SHA-256: 21ec516914b66a65c2680f4123ec54cf13905da23a4f03c76216414e7947810f
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://trafftec.ru/123?keyword=roadrunner+email+server+settings+pop3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380219/normal_5f8ffb2178898.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368228/normal_5f9e05c53016d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379606/normal_5f932f75ecdf8.pdfIn PDF document text
    • https://lexizade.weebly.com/uploads/1/3/4/3/134368494/6fa517b5cf3c2df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417656/normal_5fa5dd1f2f173.pdfIn PDF document text
    • https://pagofere.weebly.com/uploads/1/3/1/3/131398194/5087698.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427795/normal_5f9c4070cabe2.pdfIn PDF document text
    • https://mawepalutolura.weebly.com/uploads/1/3/4/0/134040672/4545287.pdfIn PDF document text
    • https://lavigumujow.weebly.com/uploads/1/3/4/4/134438710/gaxemizedevil_xapus_puvujax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367627/normal_5f9adaf4bd4d1.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/7d587581-c631-4d10-b7a0-6a673fba48b5/mejavedun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93018cf4-bb4d-4a03-babc-385bd9bb8122/sezofufukatolov.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_off00006575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6575 5512 bytes
SHA-256: f98b7854193805f47751d085744d394eb5a332ab8ee6f0da5444908fbd4d10d0
font_01_sfnt_off00007829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7829 11288 bytes
SHA-256: edbed75f970477850c7762e8b2200ddf0b4991fc6e58f15702b93bdff03bb438