Malicious PDF — malware analysis report

Static analysis result for SHA-256 1db29c9cb0beb55a…

MALICIOUS

PDF

39.7 KB Created: 2020-11-03 21:07:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5b50f409a2212b0141d0ed6b95c515fd SHA-1: 5d0d84155a74c9f50503eb322f6d07c750474486 SHA-256: 1db29c9cb0beb55ae427d3b1a496779e96db7949a7603595c47dce027c40f92b
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://ggtraff.ru/aws?keyword=50+watt+peavey+bandit In PDF document text
    • https://cdn-cms.f-static.net/uploads/4449193/normal_5f9dbffe320d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385876/normal_5f8deba863d68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448740/normal_5fa071672996e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407986/normal_5f9245c61d13b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378605/normal_5f94a48ad9acb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370294/normal_5f9c4b6638539.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369935/normal_5f9c9371c66a6.pdfIn PDF document text
    • https://melegejisud.weebly.com/uploads/1/3/1/3/131379421/f74559.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/0cbac1c6-5320-4cfa-bbf3-e36c6eb05cfc/31174908083.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/64440161582.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/grammar_english_language.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/nova_forgotten_genius_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fae8f08-7cd5-47c2-964f-cd30cfab5d4d/evinrude_sportwin_9._5.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/siklus_hidup_fasciola_hepatica.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/african_culture_and_civilization_a_textbook_for_ges_102.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_off00005a56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A56 5212 bytes
SHA-256: 4fa0ca09c33aed50f4f06460d58e26fc6f6d2d327d7878b89602c7c3d531e10d
font_01_sfnt_off00006c3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3C 11000 bytes
SHA-256: 14ffe55c12c7707b00a79eb68fd8603f9602a3208b9bcaa0fa3686962641a7ef