Malicious PDF — malware analysis report

Static analysis result for SHA-256 70f858773b32dc5a…

MALICIOUS

PDF

71.3 KB Created: 2021-02-25 03:54:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 24a09323285edac6fbfded23678d5529 SHA-1: 977df1916b8b1b326c250c542993954314fdba7d SHA-256: 70f858773b32dc5ae417346a988b6440dc61ab05b519ed65d90374e16fc14755
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://jacksth.ru/wix?keyword=apk+game+helper PDF link annotation
    • https://cdn.sqhk.co/noneniwetav/ji0yhhh/palmer_european_history_textbook.pdfIn PDF document text
    • https://cdn.sqhk.co/vabedesi/ivhE7JU/best_fake_nails_to_buy_at_walmart.pdfIn PDF document text
    • https://cdn.sqhk.co/zekuxemelop/aQjNiek/power_rangers_legacy_wars_free_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/japexexuko/uQzihfv/fs19_mega_farm_challenge.pdfIn PDF document text
    • https://cdn.sqhk.co/jepivitixiwo/hcEifig/end_of_term_meme_funny.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459036/normal_6002d0c121044.pdfIn PDF document text
    • https://cdn.sqhk.co/gotubosif/i6Ygeuf/63410163639.pdfIn PDF document text
    • https://cdn.sqhk.co/fozuwasixeja/idiegfU/zone_max_drift_simulator_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/pezolaje/qkvwRja/rocket_sky_mod_apk_unlimited_money.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463551/normal_602225cf94d42.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/gEgj5kc/30028642058.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/zedilegol/julius_caesar_movie_2002_actors.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/53149135074.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/59733711236.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_off0000db3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB3E 5108 bytes
SHA-256: 80ecc4e8caf4af185365b51491991e4958fed140cb017ca4b1f3a9c22fb724bf
font_01_sfnt_off0000ec7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7D 10628 bytes
SHA-256: 3025950d1f6f827762615869294b9ea0a88a4bc9db6a07a0a10a568f3399f609