Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceb90e27283e8550…

MALICIOUS

PDF

50.8 KB Created: 2020-11-01 12:55:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 856510b8c0b63418686a7e21a45f0b04 SHA-1: d533fdb52646b6de152d5a480e6cbb0c796a59d9 SHA-256: ceb90e27283e855060e0dc42bc062ecd4df90300142951afe712e963a7c4abb7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link disguised as a product review that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF_SEO_LINK_FARM heuristic suggests the document is part of a link farm, likely for SEO poisoning or to distribute malicious content. The ML classifier also strongly indicated maliciousness.

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://ggtraff.ru/strik?keyword=samsung+rf260beaesr+refrigerator+review In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367278/normal_5f9876cee40f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f8718d19915f.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/vujetevikugejiwezu.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/323b302a-7c50-48ce-837e-b2497ae1107c/danny_boy_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/forces_and_motion_exercises_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/ponodalo.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/tukebowupu.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/miss_trunchbull_description.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/ignou_sociology_notes_in_hindi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB7 5760 bytes
SHA-256: e3e447d85da896bab16340ced8008f1cd63b6f4b6c2f0930dc133392eef19bdb
font_01_sfnt_off00007045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7045 10464 bytes
SHA-256: bed9df45b657849790e82db628eeec18a02215ede1538fe5ef84836a97f6ea9b
font_02_sfnt_off00009428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9428 18192 bytes
SHA-256: 4d9703f3b371bf49a6fb7294f4a84cdb91b7fce9a8901251534d6ef58d41c743
font_03_sfnt_off0000b029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB029 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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