Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0afefd1ab76a27e…

MALICIOUS

PDF

41.1 KB Created: 2020-11-04 17:44:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: f30dbaf2db5117dfd63c8f043cb45a2d SHA-1: 5734a1984291accbc78911b7cac687728266db4c SHA-256: e0afefd1ab76a27ee2d27f097a3f6b25f128ab8cffc38bb50858f625f0417174
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.cc/123?keyword=square+knot+bracelet+diy In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371272/normal_5f95dc49e5850.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/sujezuvawuzu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_5f9a7856369fc.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/fb28b9fe-a5e6-4bd0-bc29-9fba017c7f38/10331844239.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/679ebafd-56e5-4160-b798-409280396050/bola_de_sebo_en_la_espalda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7120e79-aa84-47ef-af4c-5975a66e9aaf/funeral_agent_in_new_jersey.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ce1bf92-8b8f-4136-9e23-72dfc7f9e17b/62182841860.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c3f77a7-2c6c-4b45-b771-37e08c3cf53e/les_nergies_c_est_pas_sorcier.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/add23e5d-3c75-41c6-9d53-d3288612748f/kigutuliziw.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_off00006203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6203 5288 bytes
SHA-256: 416ab45626227c2bcd6d35290d8e7b29323a84b87c5606d803ef8216ead8450e
font_01_sfnt_off00007417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7417 10512 bytes
SHA-256: 83c5e79d9d34b53f4c59d694131427b997bab05e8de253bbf44aba6ad0b32d2d