Malicious PDF — malware analysis report

Static analysis result for SHA-256 d210fb78a7a3147a…

MALICIOUS

PDF

64.7 KB Created: 2021-02-06 04:33:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 22b3cf96e51d9b442d715f3fec212296 SHA-1: e6a785448c1c1dbdf3aff2d59423b6d552a1b460 SHA-256: d210fb78a7a3147a7c961e573578dea69cf67b3d15f195bb4f958738120be2b1
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://maypoin.ru/wb?keyword=blackmart%20apk%20%20for%20android%20free PDF link annotation
    • https://cdn.sqhk.co/marixefe/gdwhagj/carrom_board_rules_in_malayalam.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/SlghihY/jovexomofavemoramajig.pdfIn PDF document text
    • https://cdn.sqhk.co/rapowipijes/gdDjgid/texas_longhorns_new_basketball_coach.pdfIn PDF document text
    • http://trastenmyqort.online/jujizixudaw9eav.pdfIn PDF document text
    • https://cdn.sqhk.co/datawafag/eCzjifw/last_pirate_island_survival_mod_apk_new_version.pdfIn PDF document text
    • https://vunorozixu.weebly.com/uploads/1/3/1/1/131163876/pipazenapugurotek.pdfIn PDF document text
    • https://kujuxase.weebly.com/uploads/1/3/4/5/134584075/rabevafup_rujodapivupan.pdfIn PDF document text
    • https://nawivavunof.weebly.com/uploads/1/3/4/6/134669961/gejatafekasodine.pdfIn PDF document text
    • https://cdn.sqhk.co/zikonidenijo/hgegegd/jixagimezu.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/hWLhiij/the_chosen_apparel.pdfIn PDF document text
    • https://cdn.sqhk.co/visunexabore/Qvigghi/best_deals_on_ipad_pro_today.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/sizabo/bypass_frp_2019_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/mudutaxevakomilenatino.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/bopekutakotataxofitewir.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/barenivagala.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/excel_copy_conditional_formatting_to_new_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/zavutezuxaxoto.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/bengal_tiger_telugu_movie_audio_songs.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_off0000c468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC468 5236 bytes
SHA-256: a148db3af6aee92339f7951a2316b5fb1c7774969a672d419c6d4537ab3ba54c
font_01_sfnt_off0000d627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD627 9284 bytes
SHA-256: 8fffe95b3a3a8118efeb8e6e862ff73dc06927618186c10e158f8bcc9640b3b6