Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc4381dfaaf3b40…

MALICIOUS

PDF

71.3 KB Created: 2021-02-23 16:38:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 03818a094f2415ae267f8566e651f921 SHA-1: c3fe222e18d03976e7c8989ccb5cdfc17b6bf0b2 SHA-256: 0bc4381dfaaf3b40690959a0a45aca45d7613a8d283ac6f57defb80fbbe9449f
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://maypoin.ru/wix?keyword=6th+grade+social+studies+final+exam+study+guide PDF link annotation
    • http://hookup757.fun/gracel_hmm_torrentzxcc2.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/c_e_t_exam_information_marathi.pdfIn PDF document text
    • https://cdn.sqhk.co/xubupigegi/gjhd7ig/what_does_the_word_planet_mean_in_spanish.pdfIn PDF document text
    • https://cdn.sqhk.co/vopupevomate/fPjdLja/ilive_gold_edition_difference.pdfIn PDF document text
    • http://wonnaturila.space/vobanagetilolojenalopoxaerv3.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/7J31ijt/paypal_apple_wallet.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/vuzek.pdfIn PDF document text
    • https://cdn.sqhk.co/sazoteva/gTNsKjf/free_crossword_solver_uk_english.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/ChgnhcI/medieval_battle_europe_apk.pdfIn PDF document text
    • http://com-connexion.xyz/99955315485sssat.pdfIn PDF document text
    • http://itdiscounts.pro/play_boy_punjabi_song1vic3.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/cold_rolled_steel_sheet_suppliers.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/godega.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/91361009546.pdfIn PDF document text
    • http://nominasacra.ru/fallout_4_hud_framework_not_working6p1ru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000da63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA63 5664 bytes
SHA-256: 11c0d4519cd2a233577817560266b4cca27d7f4f005022fe725c54b76c6e820b
font_01_sfnt_off0000ed8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8C 10192 bytes
SHA-256: 298f9d2dfd5075e6f837e84e8018a788c8d423e73f2ac89f27a9611218925c69