Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb4b0266f6b0368…

MALICIOUS

PDF

82.1 KB Created: 2021-02-23 06:51:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 32cbfbae4c0ef2dbed30f590a79ac165 SHA-1: db3d0575117c2fa7e95fa66f2a236b1334f92fd2 SHA-256: 3eb4b0266f6b03680f3ddf0c4a672da4202521a2b6de2ed8eb9eccda2ce17195
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://yafferge.ru/wb?keyword=nintendo%20ds%20lite%20super%20mario%20bros%20walkthrough In PDF document text
    • https://cdn.sqhk.co/rokajoten/8KggHxA/mobile_data_switch_pro_apk.pdfIn PDF document text
    • https://domisupufiz.weebly.com/uploads/1/3/5/3/135316273/6843288.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378852/normal_5fd65881178a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477373/normal_5ff4aff8274d4.pdfIn PDF document text
    • http://wukebejajixajen.iblogger.org/fire_emblem_awakening_chapters_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/gidewura/Phcjaxl/freeze_dance_music.pdfIn PDF document text
    • https://levalezekavazif.weebly.com/uploads/1/3/4/6/134639406/60be23f.pdfIn PDF document text
    • http://fakafegixir.iblogger.org/gerard_butler_movie.pdfIn PDF document text
    • https://kekufekogaj.weebly.com/uploads/1/3/4/7/134768560/tiluzerusomiso-gajebexuzike.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/ifIyhe3/gafenofowusunumoko.pdfIn PDF document text
    • https://wididalinur.weebly.com/uploads/1/3/3/9/133986726/zajasiximo_fasusebofux_dafivopupe_repivoxokowibiz.pdfIn PDF document text
    • https://balolenitazir.weebly.com/uploads/1/3/1/0/131071159/8350786.pdfIn PDF document text
    • https://xuredetinumimo.weebly.com/uploads/1/3/4/6/134630251/dapisenigexi-waluwebok-kiwefivenab-tunitorur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://beruleruz.rf.gd/jomivifagen.pdfIn PDF document text
    • http://xumusemowujev.epizy.com/bureau_informatique_ikea_occasion.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_off000103ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103FF 5640 bytes
SHA-256: 9850819fa05e4c2f494cdc84150c54f15d2854a0aeac7b8abb3da44d2165cffa
font_01_sfnt_off0001170e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1170E 10728 bytes
SHA-256: 5944dfdc76f3ead138f1e503ea20498d2372931d25f105ef06f57dc6b8a9066c