Malicious PDF — malware analysis report

Static analysis result for SHA-256 ada5213cb8db1600…

MALICIOUS

PDF

70.1 KB Created: 2021-02-23 01:29:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e1657c2d5aba27b57b07c247575b27dd SHA-1: f20209b2392c8230565361a837358ff91dd70252 SHA-256: ada5213cb8db160078e0c7ba6442b01c5736b7b38ce5869bd35add45c305b519
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=how+to+silence+alarm+on+eaton+ups In PDF document text
    • https://cdn.sqhk.co/tizuvuwo/Chcrico/best_horror_vr_games_steam.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/jh3ljh3/13926536629.pdfIn PDF document text
    • http://gasorutika.iblogger.org/19595824660.pdfIn PDF document text
    • http://karaulovlife.site/how_do_i_search_an_image_in_reversen8h5t.pdfIn PDF document text
    • https://tesujirigagorin.weebly.com/uploads/1/3/4/8/134869290/gugagarasoburodexi.pdfIn PDF document text
    • http://reform-st.ru/the_temple_of_forgotten_secrets_audiobookvwdm1.pdfIn PDF document text
    • https://cdn.sqhk.co/kisereta/iesicZU/zifenopevavipisolewofov.pdfIn PDF document text
    • http://fenellalucynelle.info/pimakunanaxoxafu4wced.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xemubekimivimed.epizy.com/guwavibonoson.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/free_geometry_drawing_software.pdfIn PDF document text
    • http://xatowumo.epizy.com/bpsc_65th_prelims_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/jelesukimux.pdfIn PDF document text
    • http://boripodadup.epizy.com/86590846513.pdfIn PDF document text
    • http://jegafat.rf.gd/cv_format_for_sales_manager.pdfIn PDF document text
    • http://gavomowiwolaxu.rf.gd/malafe.pdfIn PDF document text
    • http://josekopiguvalup.epizy.com/harga_cb-_100_mini_android_projector_portable.pdfIn PDF document text
    • http://punolubumima.epizy.com/87415931867.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/assistive_touch_apk_android_2._3._6.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_off0000d6c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C5 5132 bytes
SHA-256: e0bb33205a40ce651530ca996f71d64380706bd3d90c07119cd4aff2527b7d90
font_01_sfnt_off0000e834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE834 10292 bytes
SHA-256: 9627d76a66f363829dc7395f4274fce4b3dfcce954413ee73b46b3cbc603b68b