Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf7fa849e6ab7b92…

MALICIOUS

PDF

75.6 KB Created: 2021-05-07 08:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 15b9980b562af42d5817159675c89250 SHA-1: 925b0e014b2b31f7fbdaaf7ddfc6ca6bec3c5c8b SHA-256: bf7fa849e6ab7b9262a5c2813596001588aa3c227bffc90df32d9b1a477afeae
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/strik?utm_term=dance+like+new+song+lyrics PDF link annotation
    • https://gulatavinijigu.weebly.com/uploads/1/3/4/5/134507109/7749035.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484835/normal_6010968e157e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453327/normal_5fdf2aa068a03.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374848/normal_5feb40c78af86.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383579/normal_5fed9f00462c0.pdfIn PDF document text
    • http://se-mrush.com/128807522355gv61.pdfIn PDF document text
    • http://thailandlove.site/bikedetitewefaxilasukyk6ht.pdfIn PDF document text
    • https://kosazalosir.weebly.com/uploads/1/3/2/8/132815054/1501803.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365606/normal_601e59e0c343e.pdfIn PDF document text
    • https://mibonujatupogu.weebly.com/uploads/1/3/5/2/135297119/robajejorafiga.pdfIn PDF document text
    • http://helplnstagram-confirm.com/the_art_of_racing_in_the_rain_chapter_8_summary9lb1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374366/normal_5fc99a05a0bbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404308/normal_603ed5544ac0f.pdfIn PDF document text
    • http://shopee24.site/779321549284io4d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450243/normal_5ffcc7ca8d8c1.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/b96ca801-9e72-40c2-8757-b2ad9475c5ef/39078097340.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d447d4b-d4dc-47e0-a61e-398b1af9972d/65796423406.pdfIn PDF document text
    • https://3f740848-0e57-4b51-8596-564812021bec.filesusr.com/ugd/cbe17c_f9e4f9f3e5ce45d18ebdfb763ec4a4d8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a77f1967-ab2e-414e-9be2-57c9367c4941/hunger_games_book_1_character_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aa6ec1f-c376-4013-9908-23e3e05e5848/partes_del_motor_electrico_trifasico.pdfIn PDF document text
    • https://5b5cf7c4-d983-4e27-bd54-44d52fc9074e.filesusr.com/ugd/2f9450_27c38ffa04334f32a59b346fd7f43da3.pdf?index=trueIn PDF document text
    • https://ddb0fe67-a09a-413d-b59a-c21b1dde3186.filesusr.com/ugd/3f0e57_150b2d2ecd5548dfbb378438fa21281e.pdf?index=trueIn PDF document text
    • https://f730d15c-1921-46d2-b6d4-288333e40990.filesusr.com/ugd/e2c223_d0ca43415dfe4fc2b3c66c4a24f60540.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce3c1514-3a81-430c-b91a-cbc7ef0e34fb/what_is_the_last_book_of_the_selection_series.pdfIn PDF document text
    • https://01d7ec8a-e38e-4e33-8c76-1be31754498b.filesusr.com/ugd/24d943_fd7f0e5462824cd9a064359374a8d00a.pdf?index=trueIn 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_off0000e8a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A3 5224 bytes
SHA-256: c48f4f4b1cb34751bf37ac9ea010b6c53da6483d34e00e44991c759d3ab0846e
font_01_sfnt_off0000fa99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA99 11128 bytes
SHA-256: 54b7428b62a30c19d5c0979c2b0b44d84ec45080059d5d92bae2ebc88d1e728a

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