Malicious PDF — malware analysis report

Static analysis result for SHA-256 50c5205203ba37a0…

MALICIOUS

PDF

70.0 KB Created: 2021-02-11 09:38:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2bb03cb9d9fe293819acda6e1942a96f SHA-1: acffb58d5a2671e554b07b2f0172cea2c8bb6f97 SHA-256: 50c5205203ba37a0b098f80e62b99a4f408279ac499f2549c6f4eb9c9bfdc8e3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wb?keyword=dart%20board%20games%20pdf PDF link annotation
    • https://cdn.sqhk.co/tezofifevag/niiiiEk/lepitatuk.pdfIn PDF document text
    • https://beroloxubotuze.weebly.com/uploads/1/3/0/7/130775422/jikosisenejor.pdfIn PDF document text
    • https://xatevixi.weebly.com/uploads/1/3/4/6/134651360/porukunopal-kenujikajuni-zujotelawulisa-wimapa.pdfIn PDF document text
    • https://cdn.sqhk.co/nuwuzasemifo/haB7hjK/52497304471.pdfIn PDF document text
    • http://muzumekowasisig.iblogger.org/aorta_histology_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zozoresupiz.epizy.com/3d_bike_games_for_pc_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/47245814438.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/net_framework_3._0_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/free_email_marketing_templates_for_outlook.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/bed_sheets_sets_big_lots.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/foam_sheets_for_sale_south_africa.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/workers_compensation_job_description_template.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/wow_classic_mage_fast_leveling_guide.pdfIn PDF document text
    • http://bovifuxabobi.epizy.com/bteup_result_2018.pdfIn PDF document text
    • http://karifopiti.epizy.com/afsar_full_movie_filmywap.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_off0000d423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD423 5468 bytes
SHA-256: 098c060d3daa3458a1a6afaca8549c7f68dbb4fc63375c0484523b00ca4d460b
font_01_sfnt_off0000e6a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A7 11160 bytes
SHA-256: a6dc774feae8852209ea70be107335f3cd2194de224a4a555cd0f4ec95cd1507