Malicious PDF — malware analysis report

Static analysis result for SHA-256 756f8a64397c274e…

MALICIOUS

PDF

72.1 KB Created: 2021-01-15 00:19:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: cad5c51b60c8a0880f7707d40d79cd72 SHA-1: 62ccdcceac4861bc6f83328d3864de6b6de17612 SHA-256: 756f8a64397c274eae9bcf4f9ca83a0eb3996d691bf25d82ea741b0895b55795
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://trafffi.ru/123?utm_term=keiser+university+school+code PDF link annotation
    • https://site-1178784.mozfiles.com/files/1178784/infiltrating_the_airship_remastered.pdfIn PDF document text
    • https://cdn.sqhk.co/lozuzupadis/hjdjcgK/18827782723.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/1pK7JAn/skyrock_radio_direct_frequence_france.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/48ugeHX/the_floor_is_lava_sign_up_sheet.pdfIn PDF document text
    • https://site-1175246.mozfiles.com/files/1175246/haunted_house_halloween_horror_scary_sounds_and_music.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/zaxefemebidaz/bullet_force_apk_only.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/badlapur_movie_free_for_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/bodoran_sunda_si_udin.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/prevencion_de_bullying_escolar.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/14773731506.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/2812836408.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/kaufland_letk_pt_tden.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/automated_forex_trading_software.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/zarijuboderekiverom.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/coreldraw_x7_portable_full_version.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_off0000dd55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD55 4948 bytes
SHA-256: 38a80475775bc25e36b90cc06b3957dcc98cdd56f298e3fd5e0aef30aa693bbb
font_01_sfnt_off0000ee37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE37 11332 bytes
SHA-256: 8ac58d1338f621a000066f6d88df3925b6415730507fa6de27bceec08237e215