Malicious PDF — malware analysis report

Static analysis result for SHA-256 556d663d83b4b298…

MALICIOUS

PDF

72.0 KB Created: 2021-02-13 15:52:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 03b8016351baaa85ef2deed210d40803 SHA-1: dd581fc353d6b5afe4b6ef5bb2c67a07765934a5 SHA-256: 556d663d83b4b298bd5eb5c24b38c0141453b1f1c6a5b3a8e1d24c186fc62f04
126 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
  • 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://baarspo.ru/aws?utm_term=my+browser+is+not+working+android PDF link annotation
    • http://ver-alex.website/bamavippw3p3.pdfIn PDF document text
    • https://cdn.sqhk.co/furaxofir/bk6ijhi/zixuzuvosuparir.pdfIn PDF document text
    • http://republvinb.fun/android_os_for_raspberry_pi6vzj4.pdfIn PDF document text
    • https://cdn.sqhk.co/xororasomig/jjeogcy/marketing_plan_pitch_deck_examples.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479214/normal_60050348a0492.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.site/sodofibi3fl07.pdfIn PDF document text
    • https://cdn.sqhk.co/judigirowe/gclONk3/bomber_crew_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476420/normal_5ff6a3635dc68.pdfIn PDF document text
    • https://cdn.sqhk.co/nupozifulija/cE2RMtc/basketball_legends_unblocked_6969_at_school.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490757/normal_5ffaa5ed17031.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/WpgjXhj/sajelizelanojididok.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/kodipopujufipig/variedades_de_cafe_en_el_mundo.pdfIn PDF document text
    • http://luvewon.epizy.com/sheets_of_paper_in_a_case.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/tumaczenie_zda_na_angielski_wiczenia.pdfIn PDF document text
    • http://poravilotizeve.epizy.com/dark_souls_3_4th_boss_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/espanol_santillana_level_4_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/block_websites_chrome_android.pdfIn PDF document text
    • http://bolapapuziku.epizy.com/rawokuxewefobole.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_off0000dc48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC48 5364 bytes
SHA-256: 04e4dd85cc87be409f1f34fdb700927458cb451814b06f71cb16a003ecb15ed1
font_01_sfnt_off0000eeb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB7 10804 bytes
SHA-256: 87d356ce959e50c8d368d712d1f5e9ddb9924763dd65757f7d7fba15836c96c1