Malicious PDF — malware analysis report

Static analysis result for SHA-256 892526b7a5fcd324…

MALICIOUS

PDF

66.2 KB Created: 2021-03-01 18:48:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 77b65b4a0de7b30021d136a5b00bb24d SHA-1: 04010d18f4ae7111737f0c5e8a87820abe2ac697 SHA-256: 892526b7a5fcd324e349a55a64dc6917ca706e8687d0a5eced50a1b7b22f0678
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://yafferge.ru/award?keyword=how+to+thread+brother+pe770 In PDF document text
    • http://xoziduso.mypressonline.com/37759171363.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/pigesifutuzisuvov.pdfIn PDF document text
    • http://rivepozepuxar.mywebcommunity.org/3d_face_mask_sewing_tutorial.pdfIn PDF document text
    • http://woziwowariv.sportsontheweb.net/parimidubujutopofi.pdfIn PDF document text
    • https://tiletemilowa.weebly.com/uploads/1/3/2/7/132710791/rovexaluge.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/buxekijunagewojesa.pdfIn PDF document text
    • http://dilawiputonu.mypressonline.com/how_to_apply_gentle_leader_collar.pdfIn PDF document text
    • http://reduslim-europa.site/arrest_manager_gta_vrvsrs.pdfIn PDF document text
    • http://xariketixagat.mypressonline.com/brother_tn_630_wifi_setup.pdfIn PDF document text
    • http://vevaroda.scienceontheweb.net/medical_assistant_books_for_sale.pdfIn PDF document text
    • https://xejotonevuxujuj.weebly.com/uploads/1/3/1/3/131379732/4424263.pdfIn PDF document text
    • http://bukenisefino.mygamesonline.org/79853807562.pdfIn PDF document text
    • http://kozidozilujivox.getenjoyment.net/lilakerogiwe.pdfIn PDF document text
    • https://puroporutenes.weebly.com/uploads/1/3/1/6/131606954/6182474.pdfIn PDF document text
    • https://rizafosukozesal.weebly.com/uploads/1/3/5/3/135346652/gisewi_mavinijeji_fibawiba.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/zoluwivebiro/6809176651.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/evanescence_anywhere_but_home_zip.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/86181141474.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/11892092609.pdfIn PDF document text
    • http://jasunusemoki.onlinewebshop.net/gipijitezuzudepesodidoduw.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/mezatoxifobaxizixaloke.pdfIn PDF document text
    • http://jabejanaboz.atwebpages.com/voxijotivawobewexujavon.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_off0000c930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC930 5252 bytes
SHA-256: ecbedf2ea0731a1b2b5b482aef7e85b09c34f734c552550215f29c513c45778c
font_01_sfnt_off0000db15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB15 9428 bytes
SHA-256: d9c16b9eaef9cd216374b5d6089a044962c0d33c79bac7ed2f626de0b253b9d1