Malicious PDF — malware analysis report

Static analysis result for SHA-256 80200d9c28401b59…

MALICIOUS

PDF

112.1 KB Created: 2021-06-13 19:22:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: eefd327fed35013c94c586033e8edd37 SHA-1: 10f0b84b169f8cc942790c52a4fedeae3cbb2c56 SHA-256: 80200d9c28401b598ea4e65ee6da5cf741e3754d16794062d31af651d8dff36d
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links point towards a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/123?utm_term=ekko+guide+s9 PDF link annotation
    • https://bonagimeduvutup.weebly.com/uploads/1/3/1/4/131453121/jilebowewisasud-fekowirudovu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408352/normal_5fff47f859a37.pdfIn PDF document text
    • https://danatitajovo.weebly.com/uploads/1/3/4/1/134108849/1911061.pdfIn PDF document text
    • https://fokatofevi.weebly.com/uploads/1/3/2/7/132712268/falasez_fuwofubosoxema_nexosopesoj_waxufibo.pdfIn PDF document text
    • https://vetovevigu.weebly.com/uploads/1/3/4/4/134486276/aa1bcb808569c6d.pdfIn PDF document text
    • https://narimokilef.weebly.com/uploads/1/3/4/6/134603618/6f44dac5c66dd84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374851/normal_605ee9be1dc6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449615/normal_60501f92dd04d.pdfIn PDF document text
    • https://juvikawupuw.weebly.com/uploads/1/3/1/4/131409017/9008735.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451930/normal_605521dc904fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483349/normal_6033ae6414cd7.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
    • http://noxiwako.pbworks.com/w/file/fetch/144523875/iskcon_bhagavad_gita_marathi_free_download.pdfIn PDF document text
    • http://juvudibip.pbworks.com/w/file/fetch/145151163/kukudipufakakopiwoj.pdfIn PDF document text
    • http://jeveriwilum.pbworks.com/f/vector_full_apk_hile_indir.pdfIn PDF document text
    • http://kipizasuzeda.pbworks.com/f/priyamanavale_full_movie_hd_1080p_download.pdfIn PDF document text
    • http://xinunubaz.pbworks.com/w/file/fetch/145171773/72959480248.pdfIn PDF document text
    • http://pivumiraw.pbworks.com/f/descargar_formato_de_hoja_de_vida_en_word_para_editar.pdfIn PDF document text
    • http://luwivaj.pbworks.com/f/duxogud.pdfIn PDF document text
    • http://xiwitanul.pbworks.com/w/file/fetch/144466440/83826484536.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13390 4556 bytes
SHA-256: 6bc8f0a44c04791e8087e0c4873dd58a19667d298fab4cec307c19c3a898797a
font_01_sfnt_off000143a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143A7 4528 bytes
SHA-256: 2afae7ced308b73edb939e81b122d7fd012270145e61cae7185f1fdf1b8c91d9
font_02_sfnt_off00015311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15311 2448 bytes
SHA-256: 73a5ad37eb4add75722e1abc205f1cd642f676486e1df4f8691ba83268a20425
font_03_sfnt_off00015dd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15DD4 14884 bytes
SHA-256: 7b8d16c065b7302215971550d8cba3eedb11af96bbae86ba98a904dc752f3f85
font_04_sfnt_off00018a96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A96 17316 bytes
SHA-256: 33d5d88869e652a6723176a5d34f558d4663957298e7e1ccf6b4799170c10b1c
font_05_sfnt_off0001a40e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A40E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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