Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0a8a7a32e89d359…

MALICIOUS

PDF

75.6 KB Created: 2021-02-27 00:18:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 48543c9e23f0564df51a2c5afa0ff918 SHA-1: 069b6cb212e63faab841345e65ac0988f61db499 SHA-256: f0a8a7a32e89d3592fcc6f8b68000cf80fd0bf863529153cb836b0b834b9fc4e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/aws?utm_term=what+is+the+principle+of+camera+lucida PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4391920/normal_5fcd5af0a6204.pdfIn PDF document text
    • https://cdn.sqhk.co/tumosirewuw/fEVi6e3/basketball_battle_crazy_games.pdfIn PDF document text
    • http://dujojiwasemob.mywebcommunity.org/how_to_write_a_professional_summary_on_a_resume_examples.pdfIn PDF document text
    • https://cdn.sqhk.co/tudobele/cid7Vgd/dofesavumizudilusogeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469852/normal_603052d0ea6be.pdfIn PDF document text
    • http://zutatowatipo.mywebcommunity.org/doxigusiwuz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465538/normal_6006facc5b717.pdfIn PDF document text
    • https://cdn.sqhk.co/vitozogog/PJiagg6/nitro_drift._io_game.pdfIn PDF document text
    • https://cdn.sqhk.co/pumafuki/Z4qifBU/rewemaguxawus.pdfIn PDF document text
    • https://cdn.sqhk.co/nananava/biiDmji/51445456546.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/eqhdtaN/61730537370.pdfIn PDF document text
    • https://cdn.sqhk.co/lojumisebu/hdjfxgg/halloween_party_day_2019_amsterdam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453909/normal_5ff6310de397c.pdfIn PDF document text
    • http://xisumagogali.getenjoyment.net/koginuzegusetatiwi.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/xurixado/cv_template_word_sample.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_off0000e923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE923 5408 bytes
SHA-256: dad04c92852d6dd82f7e7edef961609f5ecd0570fcf61670acd28aed1f8db5fe
font_01_sfnt_off0000fb6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6A 11180 bytes
SHA-256: 54ed02cf15bf9c15a64f425abce81c94e00535ae30f85d2792391127526850a3