Malicious PDF — malware analysis report

Static analysis result for SHA-256 20a541858a492a0e…

MALICIOUS

PDF

78.1 KB Created: 2021-02-18 03:41:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 91dfe21bac97148e4b5b15907bbdb8c6 SHA-1: eb0efe0f3dc762348b0bc9cf1cedfde2262b94ff SHA-256: 20a541858a492a0ee25d9d30682b71f4923e5c39bf3c7e4943f2ec902b951fbf
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://jacksth.ru/aws?utm_term=black+and+decker+toaster+oven+to1950sbd+reviews PDF link annotation
    • https://muverepifakapi.weebly.com/uploads/1/3/5/3/135387058/tavemiv-miguretini.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/kgfgfhf/zero_hour_heroic_puzzle_tool.pdfIn PDF document text
    • https://xatuguje.weebly.com/uploads/1/3/1/8/131856293/zuxotigabovaxe.pdfIn PDF document text
    • http://laulu-go.ru/fonofuvi3vbzn.pdfIn PDF document text
    • https://sefariduzaki.weebly.com/uploads/1/3/4/6/134665623/6139599.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/djaiahf/worms_3d_pc_game_free_download_full_version.pdfIn PDF document text
    • https://cdn.sqhk.co/ragonujip/bqihjrS/mobejakodifokazuj.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/fgdzjjU/10839092987.pdfIn PDF document text
    • https://fibobamoga.weebly.com/uploads/1/3/1/6/131607866/kavolonuzunaj.pdfIn PDF document text
    • https://cdn.sqhk.co/rasepotobami/hjgegih/wrestling_fireman_s_carry_setup.pdfIn PDF document text
    • https://cdn.sqhk.co/bubarozotuj/7jgjfje/25816097762.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/wutogugej/icao_annex_8_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/psicologia_de_las_emociones.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/saperinopubulitepemagi.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/ben_hur_2016_free.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/how_to_fix_kallax_units_together.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/bts_logo_font.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/android_marshmallow_apps_to_sd_card.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_off0000f2fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FB 5812 bytes
SHA-256: 21ee618e377781e82d9df77f14a165428b7c3500e8b76f4dd23d71aad69e33e5
font_01_sfnt_off000106e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E9 10560 bytes
SHA-256: 67233f661b626cc1104e7e98e7d2a3cc2abed60e69cfb941637e727f0523a340