Malicious PDF — malware analysis report

Static analysis result for SHA-256 85e5858e509d99ab…

MALICIOUS

PDF

73.5 KB Created: 2021-02-12 23:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4404e5087e167faa1de1002d52b4d27d SHA-1: 40c869ad9c90f8796a382a653ce5d7d7be89d04b SHA-256: 85e5858e509d99abcc681335e1561c488f2de69452e1103d4b1c9312e76bc2c0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wb?keyword=sewage%20treatment%20project%20pdf PDF link annotation
    • http://nivawegokex.22web.org/kakshi_ammini_pilla_movie_song_free.pdfIn PDF document text
    • https://cdn.sqhk.co/manoxixo/o7idQgi/best_photo_editor_for_instagram_2019.pdfIn PDF document text
    • https://lififotepul.weebly.com/uploads/1/3/4/3/134339298/bajofupujoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/bfwWBBL/download_free_call_of_duty_black_ops_iii.pdfIn PDF document text
    • http://gedawirij.66ghz.com/deadpool_2_movie_trailer.pdfIn PDF document text
    • http://wozuwekifebar.iblogger.org/bituliset.pdfIn PDF document text
    • https://cdn.sqhk.co/noxisoture/hiZTihe/pac-_man_ghost_names_sue.pdfIn PDF document text
    • https://keregejuvuja.weebly.com/uploads/1/3/4/3/134345288/nugutun_nusipuxupikiw_wilebibapopeja_vokukitifareri.pdfIn PDF document text
    • https://cdn.sqhk.co/belesobikezi/hhhcNgw/todo_math_price.pdfIn PDF document text
    • https://cdn.sqhk.co/fasotaluvose/difhjja/spiral_jetty_meaning_robert_smithson.pdfIn PDF document text
    • https://cdn.sqhk.co/wanolugago/fLAFibI/kozovexironizusezir.pdfIn PDF document text
    • https://cdn.sqhk.co/pobumepova/rgiJqTn/techcrunch_sarah_perez.pdfIn PDF document text
    • https://natapoja.weebly.com/uploads/1/3/0/8/130813782/giwun.pdfIn PDF document text
    • https://lakupofudeb.weebly.com/uploads/1/3/0/7/130775354/jexoka-pifijif-belajudojeru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tibepaxun.rf.gd/sports_listings_tv_guide.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_off0000e202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE202 5536 bytes
SHA-256: 6998832933fe5e0e9abd22421cc84f83f965b10f41bcd57f97599fb3d14cc41f
font_01_sfnt_off0000f4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D6 10640 bytes
SHA-256: 9681619922ad635ce476e3764313591df501018182216bc2af57de4f4ae1fe2b