Malicious PDF — malware analysis report

Static analysis result for SHA-256 36ffd40ecffc4a95…

MALICIOUS

PDF

65.5 KB Created: 2021-02-20 18:23:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 756791e2b68f5cc7c9fef87bfbae7d90 SHA-1: 6e8950beaef4f2e1d7a8ab634f2a95e9871a6911 SHA-256: 36ffd40ecffc4a954b7320e6aa7886b0aa943b67634761cefbc4d6ef0b5ec620
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=lesson+14+vocabulary+answers PDF link annotation
    • https://xatevixi.weebly.com/uploads/1/3/4/6/134651360/nimumatar.pdfIn PDF document text
    • http://detonic-ro.website/durga_saptashati_book_in_kannadaeri4v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380675/normal_6003d0b888d3f.pdfIn PDF document text
    • http://4kuhd.me/what_does_bible_say_about_submissive_wifeuvgy8.pdfIn PDF document text
    • http://freds.space/applied_economics_senior_high_schooljlxlv.pdfIn PDF document text
    • http://torchqbfl.fun/cunninghams_encyclopedia_of_magical_herbs_llewellyns_sourcebook_seriesq0uc8.pdfIn PDF document text
    • http://wide-do.top/adobe_flash_player_latest_apk_free05vew.pdfIn PDF document text
    • http://quinzsy-studio.design/588993991761dxk4.pdfIn PDF document text
    • http://alex-chekalev.com/biopac_emg_lab_reportl0bxv.pdfIn PDF document text
    • http://mx50off.pro/3679035645o4zs4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496824/normal_602103709c7c9.pdfIn PDF document text
    • https://lukafove.weebly.com/uploads/1/3/4/6/134655473/melemuzu.pdfIn PDF document text
    • http://istlan.space/98106735956y7buc.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/jobavo/33625999709.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/play_store_application_pending.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/girubabater.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/94710082354.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/lizojuxumud.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/28822120810.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/gate_2020_form_notification.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/winezivigobovo.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_off0000c5df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5DF 5268 bytes
SHA-256: fb5748c390a6f52711542fd076040f9d2c9f05a9379498adf3670f38f19fdc3e
font_01_sfnt_off0000d806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD806 9556 bytes
SHA-256: 72dc2d1be201b96252cc124a4c95205448b32329bfe47520d424120876bdadc1

Open this report in the interactive analyzer, or submit your own file for analysis.