Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c3ecd1d08ac1d0…

MALICIOUS

PDF

73.8 KB Created: 2021-02-26 05:06:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5857023add51f61e4867e71a3e44eae9 SHA-1: 2055f72288836a7f61ac882ee24bee6f196c00bd SHA-256: 63c3ecd1d08ac1d0af16b857117601ca982fd286be363355123437bfcc4776a8
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/aws?utm_term=best+utv+side+by+side+for+work PDF link annotation
    • http://nesobaka3.xyz/the_beatles_complete_chord_songbook3i2kf.pdfIn PDF document text
    • http://kompledom.com/rumaripivedisupt4yys.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483388/normal_6007f3137c3cd.pdfIn PDF document text
    • http://qwert-ita.fun/cantina_band_alto_sax_sheetkg7v6.pdfIn PDF document text
    • http://dujojiwasemob.mywebcommunity.org/freud_three_essays_on_the_theory_of_sexuality.pdfIn PDF document text
    • http://all-system7.club/gojiwaxomanesetedorlzgny.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_60187d4757ddd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407552/normal_5fc84262a0723.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/vosimalume/dujekusagibuza.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/transfer_iphone_backup_to_android_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/vimizufix.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/teamviewer_12_chip.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/caracteristicas_del_suelo_arenoso.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/emotional_love_status_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/worship_house_all_songs.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_off0000e4ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EE 5164 bytes
SHA-256: c542423f91c42ff63da742857311e77331540440d6f935db2fa428098c9e2ff4
font_01_sfnt_off0000f6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B5 10532 bytes
SHA-256: aa25cca312ece6c6b262803173ece7fe8e7beb235b26b2d7c3316bd43bdc5440