Malicious PDF — malware analysis report

Static analysis result for SHA-256 f16eb4b8dd812fd7…

MALICIOUS

PDF

75.5 KB Created: 2021-02-09 23:35:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2eb1178d31084ffdf6b1056190f2b784 SHA-1: 57f8e69360bce3b0043d74eb54dcc704cb4fbdfc SHA-256: f16eb4b8dd812fd7441b7480d55db589b68e7bb55b6eeb578d00e064f3c74f5c
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=child%2527+s+play+2019++google+drive PDF link annotation
    • http://negowupo.iblogger.org/cold_rolled_sheet_metal_supplier.pdfIn PDF document text
    • https://cdn.sqhk.co/sileluzorupo/kibpxWo/1497541716.pdfIn PDF document text
    • https://cdn.sqhk.co/gegefemorosu/QgfXghN/xebakafupufipabo.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/bhjhhlh/dwayne_johnson_net_worth_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/sijiposago/iaUjbZM/84340209692.pdfIn PDF document text
    • https://cdn.sqhk.co/naxokujim/dSBgfAy/jirowowifewofawemer.pdfIn PDF document text
    • https://cdn.sqhk.co/womilepeba/cYjgijY/15913247326.pdfIn PDF document text
    • http://xojuxegalixiluj.66ghz.com/10964179092.pdfIn PDF document text
    • https://cdn.sqhk.co/jupujezaxa/hggg4ia/37951747791.pdfIn PDF document text
    • https://cdn.sqhk.co/gotakavapu/dgfeTgf/82872713481.pdfIn PDF document text
    • https://cdn.sqhk.co/kasavakujosi/hgWmXhe/25347604433.pdfIn PDF document text
    • https://cdn.sqhk.co/kozuvurop/sRhcpgj/39312314923.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/jjfjdhg/50051193225.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gogejovuxog.epizy.com/tisebilebitigekewiri.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/ximapekabixodumoku.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_off0000eb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB33 5804 bytes
SHA-256: afd9681d4f60f8cb4abed5d263d757cdb30a7bfd0f045664f5acaedf0ba23a97
font_01_sfnt_off0000ff00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF00 10040 bytes
SHA-256: b64bb57974f87aa8c02291a7a11d9a9be811e7a963bcd2656cd76a655e240d00