Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4ea4186ac3c196e…

MALICIOUS

PDF

75.3 KB Created: 2021-02-19 06:51:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 40ff44d8a1cabb6dcb683335e3a846e4 SHA-1: da98db92206f3ef059c2718b4f4e34b6a49dbdb6 SHA-256: c4ea4186ac3c196eff8e9f967ce5d620077aceca5783c9637a1c2a23c16e416d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://bologen.ru/wix?keyword=lvusd+summer+school+2020 PDF link annotation
    • http://freefire-gifts.com/mezufagepozagpik0b.pdfIn PDF document text
    • http://rutekotugu.22web.org/faxiniwafebu.pdfIn PDF document text
    • https://cdn.sqhk.co/daguvemet/PieKghR/dragon_quest_builders_2_multiplayer_split_screen.pdfIn PDF document text
    • http://kersita.fun/matilda_movie_download_mp4qb35g.pdfIn PDF document text
    • http://opt15.ru/futomafedisifuges3sw1j.pdfIn PDF document text
    • https://cdn.sqhk.co/jovowosifo/hgLjbIg/kixubuf.pdfIn PDF document text
    • https://cdn.sqhk.co/rixutixim/DcicuC5/50107828528.pdfIn PDF document text
    • http://intekzafast.online/fuzogvkhj1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mulunatebena.epizy.com/tumolatisoraxudasisin.pdfIn PDF document text
    • http://roxigivakupumun.epizy.com/45139310624.pdfIn PDF document text
    • http://wuparol.epizy.com/android_emulator_run_app_from_command_line.pdfIn PDF document text
    • http://jubalagifagusop.epizy.com/87800018882.pdfIn PDF document text
    • https://s3.amazonaws.com/borokegujuzero/57479774676.pdfIn PDF document text
    • https://s3.amazonaws.com/falejogajir/acids_and_bases_review_worksheet.pdfIn PDF document text
    • http://wuzorijo.rf.gd/leaf_anatomy_diagram_answers.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_off0000ea2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2C 5244 bytes
SHA-256: b484eee6fac7fd5601d80938e59a4ea8257bcd3d9d1584afc9cd20ada6a2dce1
font_01_sfnt_off0000fbe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE2 10836 bytes
SHA-256: a3f960af86d2935d46bc154a3980703acdc3d9f12ee12ebb4ff99dca4fb209d1