Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b9fa67ded562a75…

MALICIOUS

PDF

76.2 KB Created: 2021-06-10 18:01:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7041bc739524c19147b641ea6e81306a SHA-1: 5204946d2f57c36ed261640a7f4591a87a290013 SHA-256: 0b9fa67ded562a75b23ee37b781389cefb661420a4ea9325041a366fd0e9f225
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself is indicative of a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://oniceh.ru/pbw?utm_term=the+decision+maker%2527s+playbook+pdf PDF link annotation
    • https://fudamugifotud.weebly.com/uploads/1/3/5/3/135323440/e60a0330ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389074/normal_60592acf992ed.pdfIn PDF document text
    • https://xuduburuk.weebly.com/uploads/1/3/4/3/134323667/5302699.pdfIn PDF document text
    • https://zodiniligi.weebly.com/uploads/1/3/7/5/137509719/ab10f1a6efd6.pdfIn PDF document text
    • https://rilokudewagozem.weebly.com/uploads/1/3/4/5/134597993/jiguvowon_tetakipepibi_bivame_damatalaxexiluz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420025/normal_606dd87da88bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451949/normal_6068b8e3c33a6.pdfIn PDF document text
    • https://julasunanuk.weebly.com/uploads/1/3/4/3/134308365/gujopex-robumimode.pdfIn PDF document text
    • https://kekidebas.weebly.com/uploads/1/3/4/6/134633427/1246267.pdfIn PDF document text
    • https://gafexevuwemab.weebly.com/uploads/1/3/6/0/136091136/zulukofus.pdfIn PDF document text
    • https://fivefijoxiwu.weebly.com/uploads/1/3/1/4/131453543/779f2dc1f960d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuzimotum.pbworks.com/f/virtual_dj_pro_8_free_download_full_version__serial_crack.pdfIn PDF document text
    • http://vadibun.pbworks.com/w/file/fetch/144437169/pythagorean_theorem_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fad33e1-d928-48cb-a2c5-e20d24f73db6/xizasexurebiserax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3a1bc62-301f-444b-ad47-ddacd39206bd/how_do_i_reset_my_defiant_motion_security_light.pdfIn PDF document text
    • http://suniger.pbworks.com/w/file/fetch/144570507/96015733122.pdfIn PDF document text
    • http://mavujeridolu.pbworks.com/f/lightroom_presets_unlocked_apk_download.pdfIn PDF document text
    • http://xujefix.pbworks.com/f/90939678384.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e94326f-da12-4c37-a523-157f1c77d43b/xujixobabawigaxapusiz.pdfIn PDF document text
    • http://vonodatob.pbworks.com/w/file/fetch/144869610/polaroid_onestep_600_camera_manual.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_off0000ec52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC52 5684 bytes
SHA-256: 0843c065e1446c22843d2d02f226e50f2d2462e25cd4e79f32ebf158a06659b7
font_01_sfnt_off0000ff81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF81 10684 bytes
SHA-256: 7503e1b372720a3fa8b5a6016251d4a3bba32f363e71a7a297601af2de1a2407

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