Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d8e393d2f4e8ef9…

MALICIOUS

PDF

76.2 KB Created: 2021-02-25 21:44:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3447094d9a1ca3e0e9aeb086cab93479 SHA-1: 97a2785011483d6d4276b9032c57be6b279e16b8 SHA-256: 7d8e393d2f4e8ef908893a48847f535b52edf75d8a82b8e8dc07d5504ac5179a
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=llanos+grasslands+on+world+map PDF link annotation
    • https://mavitebe.weebly.com/uploads/1/3/1/1/131163983/9a1a1346354d5.pdfIn PDF document text
    • https://kaxapajitab.weebly.com/uploads/1/3/4/8/134896246/watub.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/giijhp9/perfect_fluffy_cream_cheese_frosting.pdfIn PDF document text
    • https://cdn.sqhk.co/sojuzafu/jhHo5EC/2_stickman_demolition_team_knife.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/5Iij91I/nadiwavute.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/Sgfu7Gh/renofu.pdfIn PDF document text
    • https://balesiloruj.weebly.com/uploads/1/3/4/6/134671801/kaverufajejis.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvonazavo/5jijbje/30576518693.pdfIn PDF document text
    • https://cdn.sqhk.co/baxijaxazixi/hhpjjLd/zadorekiverojidiw.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/cjgshiH/wizz_air_stock_nyse.pdfIn PDF document text
    • https://lixubirenolona.weebly.com/uploads/1/3/4/6/134669397/9292aee.pdfIn PDF document text
    • https://juxufosuzuvol.weebly.com/uploads/1/3/1/4/131437906/8d9ecfc050d16.pdfIn PDF document text
    • https://kabokikofonesa.weebly.com/uploads/1/3/1/6/131637300/5616181.pdfIn PDF document text
    • https://cdn.sqhk.co/kataregulu/HjaMAjg/all_for_1_dollar_store_online.pdfIn PDF document text
    • https://bemisawu.weebly.com/uploads/1/3/4/7/134716701/xojenetubepewej-xunule-redep-bidosom.pdfIn PDF document text
    • https://cdn.sqhk.co/wodelaganav/jhegejd/free_wifi_hotspot_device_no_contract.pdfIn PDF document text
    • https://fexalikinuzumow.weebly.com/uploads/1/3/5/3/135324316/sixigureresurusirabe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tejusadesivuti.epizy.com/el_camino_college_official_transcript_request_form.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_off0000eded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDED 5312 bytes
SHA-256: 3d38b626c548a03b831ec0ed0d38ffc46b2cdd3a1cb0807b646334e149e6cde7
font_01_sfnt_off0000fff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF7 10496 bytes
SHA-256: 36c0719f4bb6dd39700bbd0c15affe7191a0bad957fffab91a868bfa8ed1f438

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