Malicious PDF — malware analysis report

Static analysis result for SHA-256 08a2705fc4b7dc41…

MALICIOUS

PDF

72.4 KB Created: 2021-02-21 10:51:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7ce1a46a2a6c0881b5be551ccecf9376 SHA-1: 4fd1b278b0d28f22823e3e2efd65bcc64a18b9a8 SHA-256: 08a2705fc4b7dc41adeeb7f8e63dc71e353c251ec7bf062e6cc9cef98f331699
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://yafferge.ru/wix?keyword=marvel+contest+of+champions+units+hack+ios In PDF document text
    • https://cdn.sqhk.co/tumosirewuw/eLijhal/shudder_meaning_in_english_dictionary.pdfIn PDF document text
    • https://cdn.sqhk.co/jisesixerigu/hjphghb/kivavasolofusup.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/kgjmjic/linear_equations_solver_matrix.pdfIn PDF document text
    • http://dilurijarejo.22web.org/darude_sandstorm_trumpet_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/ihiaBRk/chocolate_covered_strawberries_recipe_microwave.pdfIn PDF document text
    • https://cdn.sqhk.co/torixugajo/ehcEihM/home_manager_wage_uk.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/rebesudanolo/74872964730.pdfIn PDF document text
    • https://s3.amazonaws.com/falejogajir/46310958797.pdfIn PDF document text
    • https://s3.amazonaws.com/zexozavo/world_map_continents_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/kavonozojezov.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/katyusha_sheet_music_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/chicken_invaders_2_two_players_free.pdfIn PDF document text
    • http://juwemijawikipo.epizy.com/bizzy_body_psquare.pdfIn PDF document text
    • http://lelisavebak.rf.gd/26467640146.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/picsart_pro_full_crack.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_off0000ded1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED1 5384 bytes
SHA-256: 9b52ee9f7240b28da9159a4356888a786053d0b8b9247db4320652ad45d27004
font_01_sfnt_off0000f10a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF10A 10412 bytes
SHA-256: d426c6c92f35d53a8fe7903375020fa67b465bfd919f76eee9e7f5b1d33bd5f3