Malicious PDF — malware analysis report

Static analysis result for SHA-256 8514a5a2e81d31cd…

MALICIOUS

PDF

73.1 KB Created: 2021-02-04 03:00:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 112ed32e0d6087208989b332db69eced SHA-1: ab60e983c95a718f81dcc5d5c32f27ed847c9c55 SHA-256: 8514a5a2e81d31cd27ba79a1756295723321030dc83083bd0a933808f73884ac
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=manual%20vs%20automatic%20transmission%20weight In PDF document text
    • http://lakshmi-store.ru/please_be_informed_ngha_l_gorzag.pdfIn PDF document text
    • https://cdn.sqhk.co/jofijoju/Kichbgf/wavepad_audio_editor_full_version_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pefemezized/gu2jggs/derailed_pour_house_durango_colorado.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxefoxo/f3bhjhd/find_my_friends_iphone_app_download.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/bodajaku/37715421315.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/gap_certificate_affidavit_format_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/31141435876.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/black_gospel_guitar_chord_progressions.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/blocky_highway_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/user_manual_hd_sunglasses_camera_en_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/xexokozifa.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/7994180989.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/44518393207.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/god_of_war_psp_game_emuparadise.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/tv_movie_app.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_off0000e140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE140 5372 bytes
SHA-256: 82d32ef860d06928fffdc77de28118f36b8bd7a529240eb0e880834f05c74a0e
font_01_sfnt_off0000f37a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF37A 10804 bytes
SHA-256: 3855fe98760a504fca34311c16ad9307783b9749909b84cef8efc9094e940795