Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e0af838a53568ad…

MALICIOUS

PDF

67.4 KB Created: 2021-02-13 12:48:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2525981d98e4da5f7052136311b87382 SHA-1: adb066bc07e5c22bb5172bf69f08c42b24a65465 SHA-256: 4e0af838a53568ad00744435e9fd235714d06ade2be2ecf489d3f037c8b6e1f3
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=pbs+big+picture+answers PDF link annotation
    • http://trells.space/43051543783p2b91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379982/normal_5fd107c4d0505.pdfIn PDF document text
    • https://xesanojazal.weebly.com/uploads/1/3/0/9/130968931/1593492.pdfIn PDF document text
    • http://idealslimitalia-official.site/tower_defense_simulator_script7rdg1.pdfIn PDF document text
    • http://reawolt.online/98680497895x6tza.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/NAjdXwk/samsung_music_app_playlist_location.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/jiixWih/47849955615.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvexudid/jjEhjCV/walmart_inventory_control_team_job_description.pdfIn PDF document text
    • http://kittyplay.online/words_ending_in_tious_worksheetwnv37.pdfIn PDF document text
    • https://cdn.sqhk.co/womilepeba/igkiajb/zombie_attack_roblox_codes_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/tezejikibus/hhggjim/tevukojilapigukajagude.pdfIn PDF document text
    • http://optarfes.com/vetujifawukiticsd8t.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/tobobowu/93189437691.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_off0000cadc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCADC 5304 bytes
SHA-256: dead1be1746fa65a9e8411dfd9a51858fdbbc5f60d7d502df4b8acf27e23182a
font_01_sfnt_off0000dd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD04 10672 bytes
SHA-256: ecfdaad55a694cedb86da235d8a6e5839c7b0441b6dabd61529ba261e50db2fd