Malicious PDF — malware analysis report

Static analysis result for SHA-256 9973fb415cda6c9a…

MALICIOUS

PDF

69.3 KB Created: 2021-01-29 03:21:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7cd2be11e9a11501c66bd9cc93f64a79 SHA-1: c79a86ec56feb4e1e31b25aebac0d5b7daf1c97a SHA-256: 9973fb415cda6c9a0495919eba282c81e9c4783c4c697e9d07b00b585d02bf88
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/aws?utm_term=microsoft+office+2010+fully+activated+free PDF link annotation
    • https://cdn.sqhk.co/bijukipuj/jiU7iip/qr_scanner_samsung_note_10.pdfIn PDF document text
    • https://cdn.sqhk.co/suzironanes/Xwligge/64104044619.pdfIn PDF document text
    • https://lalupapetawosi.weebly.com/uploads/1/3/2/8/132816164/wakukotixalon.pdfIn PDF document text
    • https://cdn.sqhk.co/jalizovi/ekib7jg/centre_de_formation_ifort_avis.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwonesi/OjbFRVQ/toca_kitchen_2_download_free_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/pabilere/hbiephe/plenty_of_fish_free_dating_app_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/cIDujeK/demolition_derby_3_mod_apk_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/igggghG/ranked_choice_voting_how_many_states.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/megulu/gisokozezodome.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/get_bundle_android_activity.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/zen_mind_beginner_s_mind_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/45128612101.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/cara_buat_cv_dalam_bentuk.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/a_b_c_d_video_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/apache_installer_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/kaiami_swim_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/attitude_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/street_fighter_2_apk_game.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_off0000d341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD341 5508 bytes
SHA-256: 07881c142d0031c34c6766cff72f3da8c39271c80b8e668855245ec5ef48c310
font_01_sfnt_off0000e62d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62D 9876 bytes
SHA-256: 299f2a19d80843f86e1ad1915547d6e4eece04fbcd1fd992309a586140ee67c7