Malicious PDF — malware analysis report

Static analysis result for SHA-256 216ef97e558c8a13…

MALICIOUS

PDF

70.7 KB Created: 2021-02-06 22:12:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: db5b66c5e09c8a867e57ca997bf33593 SHA-1: 4ba398d01e23cea2a424fe9126763cffe59b2708 SHA-256: 216ef97e558c8a133fb03ebe7e37f62d3536dd7e707b93077636b203d4bdac1f
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/aws?utm_term=formation+anglais+debutant+pdf PDF link annotation
    • https://cdn.sqhk.co/duputokodoz/eScjdTq/dapexevewo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484618/normal_5fd1e87ba8e0b.pdfIn PDF document text
    • http://pushbiz.fun/measures_of_center_and_spread_worksheet_answersrwqo0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460457/normal_60198ad11b44b.pdfIn PDF document text
    • https://cdn.sqhk.co/tadanopi/ijJiaNJ/all_arcade_games_in_one_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367916/normal_5fe81822d5cf7.pdfIn PDF document text
    • https://cdn.sqhk.co/lizuxutagisu/awjahen/tawumusivesewaku.pdfIn PDF document text
    • http://citrus-fruit.space/73585583147nudxo.pdfIn PDF document text
    • https://cdn.sqhk.co/gigijuke/jeghACt/crunchyroll_premium_plus_worth_it.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/fovezewi/best_android_mobile_under_10000_rs.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/bewitched_tv_series.pdfIn PDF document text
    • http://mekidojakad.rf.gd/4060544107.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/ap_calculus_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/nonizaketogepujapuzadi.pdfIn PDF document text
    • http://repoguter.epizy.com/miss_world_2018_winner_question_and_answer.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_off0000d7fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7FE 5456 bytes
SHA-256: 82ba455447eebfcde6aac4fdede0f7ce2537764cfd3910c71e395b5625827cbb
font_01_sfnt_off0000ea6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6E 10412 bytes
SHA-256: 82ce2bc1237eda5e17b6288e15ba9dc7a980b2a31979bf239f47da7c472c8b8a