Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf3c07981a7f72e0…

MALICIOUS

PDF

67.4 KB Created: 2021-02-25 13:44:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3da33035108a2db9507165dff07c8e0a SHA-1: f58008d88e9375e848d208468b5744fc7c0ca3ab SHA-256: cf3c07981a7f72e0d41b6f74637c5c34bce0e27ed7b044ad67d7e300cb11f0aa
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://leonvi.ru/award?keyword=2008+ford+escape+hybrid+oil+capacity PDF link annotation
    • http://mugedly.xyz/35829656502c5aq6.pdfIn PDF document text
    • http://itasda.online/luminous_arc_3_english_20175hjpk.pdfIn PDF document text
    • https://girosunemakafe.weebly.com/uploads/1/3/0/7/130739351/9273536.pdfIn PDF document text
    • https://refiraledekire.weebly.com/uploads/1/3/4/7/134715744/bovepiderowojudig.pdfIn PDF document text
    • http://meriline.store/bullet_basya_film_songzyt11.pdfIn PDF document text
    • https://mebedepubini.weebly.com/uploads/1/3/0/8/130813558/f5e64f82b9dd2.pdfIn PDF document text
    • http://puzigodemabotod.iblogger.org/didenikupuf.pdfIn PDF document text
    • http://tehnotop.store/bass_booster_equalizer_app_download9hxi3.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/ahjXMhd/823431207.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/KhdHjiA/retroarch_download_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/ributexovek/fx1jhyy/jumia_black_friday_uganda_2020.pdfIn PDF document text
    • http://trendmobile.ru/persian_calendar_holidays_2020pbofo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nuzesadoz.rf.gd/adding_dimes_nickels_and_pennies_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/83028606915.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/jidovo.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/models_of_language_acquisition.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/engineering_fracture_mechanics_guide_for_authors.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/64174610019.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_off0000c90b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC90B 5856 bytes
SHA-256: a6e9e5ef1a87ed71e81d3249ab650362f4e023276a5878c6a50abe956d8cac64
font_01_sfnt_off0000dcf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF6 10448 bytes
SHA-256: 434cd3f22abf5e2af488bffd0127b03205b55e4d64dd0d89e0ff7c35a497dd9f