Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ed7b5be6689c3f4…

MALICIOUS

PDF

81.3 KB Created: 2021-03-08 21:25:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c669b6a989e9ca25eeb1ffc3b95d2ef0 SHA-1: 3cbbca829bc25ea7e31d4e5d7f8e59af2d1d8247 SHA-256: 2ed7b5be6689c3f42e09ef85d6c9591d9a9d27c1491885e83a6f8f7f94cc9678
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://maypoin.ru/award?keyword=phonetic+script+exercises+pdf PDF link annotation
    • http://ukrdomonis.xyz/kizowatetowamuk314f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374859/normal_5fdc04f95526b.pdfIn PDF document text
    • http://ag-management.space/78165177693j5x6t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490929/normal_60059e6418431.pdfIn PDF document text
    • http://instasurprise.online/how_to_interpret_odds_ratio_and_confidence_intervalpocd4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493221/normal_6002ddbd0f412.pdfIn PDF document text
    • http://banquepopulaire-fr.org/star_traders_frontiers_best_ship_upgradesq2sk1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423780/normal_600aee1a7a841.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465131/normal_5ffbf7a219a94.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/mokixetat/34100890277.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/artemisia_herba_alba.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/libros_apocrifos_biblia.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/32843736273.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/bonugepufozitutabuni.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/online_bookstore_php_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/76460001841.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/fedojesize.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/bobol_wifi_tanpa_root_di_android.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_off0000fdfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDFE 5072 bytes
SHA-256: f7b8912a20367928c455a8729c7d25186948a2fde6a0171e4223ae394cd045ea
font_01_sfnt_off00010f47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F47 12252 bytes
SHA-256: 1bce8988da359261881f74fefa867ec8f5b9f4b0b86b2346832e6945e36ee036