Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe39c8a0ea1fde3…

MALICIOUS

PDF

76.0 KB Created: 2021-06-01 04:37:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d380b5e529b4b7d0996aadd2058d054d SHA-1: 9757e4c64e66703669dc84811d233d1ede93de4a SHA-256: abe39c8a0ea1fde3b3d91f1cf58558ba4ca03cae1486014eec7bd8794b093e5a
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary malicious URL identified as 'https://drafthe.ru/pbw?utm_term=capone+oh+no+song+lyrics'. Heuristics indicate a PDF link farm and ClamAV detection flags it as 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, suggests a lure related to song lyrics, likely to direct users to the malicious domain for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://drafthe.ru/pbw?utm_term=capone+oh+no+song+lyrics
    • https://cdn-cms.f-static.net/uploads/4452594/normal_6051bb5d7286a.pdf
    • https://cdn-cms.f-static.net/uploads/4380392/normal_6009eabc4a233.pdf
    • https://static.s123-cdn-static.com/uploads/4459163/normal_5fca66a91a136.pdf
    • https://tupetemen.weebly.com/uploads/1/3/0/7/130738754/3643692.pdf
    • https://kovorugoza.weebly.com/uploads/1/3/1/3/131383314/foxijav.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/554685af-ab33-48f4-b1bc-abcc53c161db/ganutusipeg.pdf
    • http://lakebimutep.pbworks.com/w/file/fetch/144417999/pojevufifojiravakegapuz.pdf
    • https://uploads.strikinglycdn.com/files/182d3fe7-7b76-4f35-8f99-046579b2a12f/el_zorro_y_el_sabueso_resea.pdf
    • https://uploads.strikinglycdn.com/files/a9d99241-28f9-4dd3-95cf-34eb71f4a6b9/vufelobaderiponapif.pdf
    • https://uploads.strikinglycdn.com/files/44bc3113-3361-4783-8751-fd6a8ee6aaa4/85006442295.pdf
    • https://uploads.strikinglycdn.com/files/cec3f4cb-0b2f-494c-9900-941173011fc5/resumen_del_argumento_de_luces_de_bohemia.pdf
    • https://uploads.strikinglycdn.com/files/a9adc9b0-cc00-460c-b364-24213ea30da3/94024279646.pdf
    • https://uploads.strikinglycdn.com/files/5ec0c5f1-0f7e-4033-9e1f-8d2414917cfc/nursing_now_7th_edition_apa_citation.pdf
    • https://uploads.strikinglycdn.com/files/3b5fc221-b529-4f7f-bf2a-e9bb7f5cf1bc/bear_apprentice_3_price.pdf
    • http://sonopewobu.pbworks.com/f/nixibug.pdf
    • https://uploads.strikinglycdn.com/files/ae04d28e-4230-48c3-b063-b8e1eb5b9427/jeff_cavins_bible_timeline_chart.pdf
    • https://uploads.strikinglycdn.com/files/df9d87e5-1eca-4b7e-bd37-376af61c247a/pojekimeteviwodosoze.pdf
    • https://uploads.strikinglycdn.com/files/cb370584-7529-4d52-9fcb-a8e93f85c4e6/casio_pro_trek_3443_manual.pdf
    • https://uploads.strikinglycdn.com/files/cca5735e-5b34-4135-8313-3a9194eb957d/bapotazotimetufadetizale.pdf
    • https://uploads.strikinglycdn.com/files/c7096eb4-8580-45c9-a487-ced7b961965e/gedidesiroxegakanumerina.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebaa.bin
ad9d2d8ec133012ce2e841bde5870708b951b951dad66444a5c9c8e0f323259f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAA 5204 bytes
font_01_sfnt_off0000fd5e.bin
93ac35a81dbb67d984c012b18690d8d7dfe031c6515eac4870341c2a0b64ae0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5E 10952 bytes

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