Malicious PDF — malware analysis report

Static analysis result for SHA-256 87ac6d4dd702450f…

MALICIOUS

PDF

67.9 KB Created: 2021-02-18 17:02:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 59f2ce286e1175ceca63649a49a2932b SHA-1: 03b2a3982ec3c11549dd08ea9797c64f8f0a4560 SHA-256: 87ac6d4dd702450fe54fa7cd11fbe5b6a873722ac4c61fd664e8af435e8f0944
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/wix?keyword=douchebag+workout+unblocked+2 PDF link annotation
    • https://cdn.sqhk.co/muvasesuru/Tqhahh8/dopeweraxefubis.pdfIn PDF document text
    • https://cdn.sqhk.co/nudotunaza/Nja0idu/livestream_mass_today.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/geibift/techcrunch_the_station_newsletter.pdfIn PDF document text
    • http://all-system7.work/cyber_security_incident_reporting_rbiezbmc.pdfIn PDF document text
    • http://copyright-security-ig.com/laluxuzimi57dkk.pdfIn PDF document text
    • https://lepepapiminokuj.weebly.com/uploads/1/3/4/4/134493398/7406768.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/ly1jiWn/final_fantasy_14_ivalice_gear.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/hdgjolS/funny_alarm_sound_download_mp3.pdfIn PDF document text
    • https://zevakevo.weebly.com/uploads/1/3/5/4/135400716/bazazawo-fibow-xinefavemof.pdfIn PDF document text
    • https://cdn.sqhk.co/puburikob/ykjipt4/alone_sad_quotes_in_marathi.pdfIn PDF document text
    • http://ifeelgood.club/bdd_in_action_ebooky279w.pdfIn PDF document text
    • https://cdn.sqhk.co/tinulafi/hejevie/big_blue_marble_academy_banking_way_greenville_sc.pdfIn PDF document text
    • http://fofesivolu.iblogger.org/12499017545.pdfIn PDF document text
    • http://huseyincanx.com/somefubevuloxepajuv304is.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://magomodatibotu.epizy.com/my_media_app_twitter_video.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/bishop_gorman_football_uniforms.pdfIn PDF document text
    • http://fukanabe.epizy.com/27763242778.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/spotify_premium_gratis_2019.pdfIn PDF document text
    • http://zilemugas.epizy.com/android_annotation_google_drive.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_off0000ccb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB7 5448 bytes
SHA-256: e91157f878fc583574478b5f96e10fed73a88beb46c809b5c30c9f21f7c3b3c8
font_01_sfnt_off0000df50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF50 10264 bytes
SHA-256: c6fc39263739762df580eb8d02f3913182bfb1a5ae48b3c34ab2b1cb5f3ae533