Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbe2e8f22ab752d7…

MALICIOUS

PDF

39.6 KB Created: 2020-11-03 22:03:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0ffb7a70d253e716779bb82118e42910 SHA-1: b806433c501cfeba552d6773108007ff1e6e7054 SHA-256: dbe2e8f22ab752d7453d4f5f003695881a67e8433b9fb3855492c522202b02f7
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, with one pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains a URL that matches the redirector link, suggesting an attempt to lure the user to malicious infrastructure.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.me/123?keyword=bah+special+request+chit+navy+2019+example In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383805/normal_5f8e1a7a7655b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377656/normal_5f9f9c6722706.pdfIn PDF document text
    • https://zatetemaf.weebly.com/uploads/1/3/4/4/134494585/wigovanokavon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392868/normal_5f9f2d3bed015.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/4b17457e-ad20-4e0a-82cf-0f3b7cddc766/gimun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83e46cb9-5378-40b0-9aec-1f80bde53717/daloleziwemidorifubilaze.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/download_clash_royale_mod_apk_happymod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b2b9a83-90b1-4346-99a1-667cb41fb855/selejekerim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67b286c9-0765-469a-a96e-d7ed731de46a/tiwiminativ.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/539c2bbb-665f-495c-b2c8-12b047420ee5/51149025017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6569957-ac08-477c-b737-e9074b68d4fa/55421986037.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_off0000579c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x579C 6060 bytes
SHA-256: 6916fdc47ee57964dc025855cac5214ee4103c268d4436094fc8ae2a43df604d
font_01_sfnt_off00006c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2A 11012 bytes
SHA-256: 5ced2fde19cefa7817f3fd73b4b743df3db571688e7b955aa6f2c42eee1d370b

Open this report in the interactive analyzer, or submit your own file for analysis.