Malicious PDF — malware analysis report

Static analysis result for SHA-256 67623e1d01e57b2e…

MALICIOUS

PDF

43.6 KB Created: 2020-10-31 07:13:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: eb71481226962ea573e204ea2a3874fc SHA-1: 84b5f16a1a8174aa8bc62b4b8e6449823ac22262 SHA-256: 67623e1d01e57b2e9cbd7e09d93bdfb9cc885448cb8a01a22fc9ea39dbf5fac2
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link disguised as a recipe title that redirects to malicious infrastructure. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded link suggest an attempt to redirect the user to a malicious site, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.link/123?keyword=bee+syrup+recipe In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366035/normal_5f92820d8ff92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380680/normal_5f8c427a0d9db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376610/normal_5f8e5d3a13cab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/460a5b16-c1df-4c2d-94e6-7482b4505ca3/charlie_malayalam_movie_in_tamilrockers._cl.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/kemegotajefofuzuxumabu.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/usmc_harp_form_order.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd584d15-ba2f-477c-8d56-d56b11ef77f6/pdf_de_uso_diario_por_alice_walker.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/kavekanejefemoxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b38bf597-34f0-40eb-ba8f-2f5f129868f0/85102705536.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/72352533253.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0aaae23-5beb-4255-aa73-3c163bcabc71/wezotazabupuferir.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_off000061fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FA 4420 bytes
SHA-256: afbe5542dafa5f3306b1b5536d3c212e87e3f474c50b6883308635984c56eead
font_01_sfnt_off00007114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7114 10304 bytes
SHA-256: 52c0cdada9e06ce0d94a11fa2c1b201e5386a79ebaf8b9e425effc37b295caac
font_02_sfnt_off00009429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9429 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361