Malicious PDF — malware analysis report

Static analysis result for SHA-256 05f59d67239b078f…

MALICIOUS

PDF

84.1 KB Created: 2021-05-22 16:25:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e421335cbaee5a65ae4ef6461aca161d SHA-1: 9576942599e80695e17102b880f7bf3c643709fb SHA-256: 05f59d67239b078f7e64e5e6d050e728158bab09a905fa7bacfa309490cc97e1
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://lozipotod.ru/strik?utm_term=mushoku+tensei+light+novel+volume+10+summary PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463262/normal_5fcb4df87cb6e.pdfIn PDF document text
    • https://poteluteko.weebly.com/uploads/1/3/1/1/131164474/6d5a258234e7c2.pdfIn PDF document text
    • https://kezesefafuzer.weebly.com/uploads/1/3/7/5/137518356/7509343.pdfIn PDF document text
    • https://bukodagunotul.weebly.com/uploads/1/3/4/0/134012399/kugunas-xefuda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387242/normal_5fdbcd248b6d8.pdfIn PDF document text
    • https://jejegufixi.weebly.com/uploads/1/3/2/7/132740716/gugawababusik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418567/normal_5fe5b3c592345.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447108/normal_60639c0075d11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481161/normal_5fe18236b7e87.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/7eea204e-1e9d-4d3a-bc20-6e648fc6084e/the_upside_of_unrequited_genre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f07c719-331c-41db-a616-f5f5b6576c79/kipubumuweja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/442b6fc3-5075-41e0-b168-dd2c58b32823/uniden_dect_6.0_home_phone_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c4b6bf7-e993-44d5-8993-c2933c212327/500_greatest_songs_of_all_time.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/550dea34-edee-402e-896f-c0ba6ac8ae4a/duxuwopizunemuza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7ed89c8-0fbc-4f98-a664-f9602d568084/novuzoremezuwumepar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb2547b5-1469-43ab-b00e-de45271f9a92/zabaxetur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/300110a1-4602-4517-be39-0be2f81669e2/star_trek_25th_anniversary_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1ff4379-0eba-4194-bcf2-abc3e0c69508/black_and_decker_gh1000_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c973bec-3147-4427-a4e2-8734e5478163/31757297229.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9db24a4-9005-4389-8e4e-fd00094b2a5f/lords_of_chaos_book_barnes_and_noble.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c4bc080-3657-410e-be89-9271d7c61a1e/zigibatugu.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_off00010a1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A1A 5524 bytes
SHA-256: b068b538102aea9e083932001316219e42642592d7d8ab7ffd9ab405ca0909a4
font_01_sfnt_off00011cd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD8 11224 bytes
SHA-256: 6fdcc257f92a8aa92a2dd668e24f15a12cf8fa165c475bf5b6f33fff02a60b7d

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