Malicious PDF — malware analysis report

Static analysis result for SHA-256 0182114a801ecb91…

MALICIOUS

PDF

73.8 KB Created: 2021-02-26 05:32:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f1fb46f86f251bebf007a9683d3ef65e SHA-1: 132e2af9721db85b01c759de7ba2277cc8a53fa6 SHA-256: 0182114a801ecb919535246c867e8895063ee985a0dd86f1787e922525ba7bc4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/award?keyword=english+grammar+class+9-10+pdf PDF link annotation
    • http://aycotoro0.xyz/4798875005209oro.pdfIn PDF document text
    • https://cdn.sqhk.co/mifopanikil/fihUCie/car_driving_games_download_for_pc.pdfIn PDF document text
    • https://fubalaxusagipun.weebly.com/uploads/1/3/4/1/134108832/4516974.pdfIn PDF document text
    • http://gufutaca1.xyz/48910378331amjsj.pdfIn PDF document text
    • https://vabeluzaxudi.weebly.com/uploads/1/3/4/8/134884936/perotisal_pomob.pdfIn PDF document text
    • https://cdn.sqhk.co/tujarazimok/hdk1Q8n/steam_link_disable_hardware_encoding.pdfIn PDF document text
    • https://cdn.sqhk.co/noxuluni/khbhcWS/puketigatenefuvusojogoto.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/LLgjhi3/10905093511.pdfIn PDF document text
    • https://dobojadu.weebly.com/uploads/1/3/2/7/132711966/51015.pdfIn PDF document text
    • https://cdn.sqhk.co/divoxisig/gcgcgei/boomerang_app_samsung_tv.pdfIn PDF document text
    • https://nibivesulekot.weebly.com/uploads/1/3/4/0/134017222/xolivozopibiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gedimuta/27524661543.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/i_found_amber_run_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/android_tv_os_apps.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/reading_skills_practice_test_3_answer_key.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_off0000e3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D5 5908 bytes
SHA-256: 5de20ee779047618686e35e04f4664eb0a9a2f9f81617390af165195399c95b4
font_01_sfnt_off0000f7d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D7 10136 bytes
SHA-256: 1373303a111b1f03be249cee570560b3736b209b1e0d34d34995c8640d8e5344