Malicious PDF — malware analysis report

Static analysis result for SHA-256 16d631906ed531e1…

MALICIOUS

PDF

72.8 KB Created: 2021-02-12 02:33:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d333933f80d306d126d725b8b996822a SHA-1: c3ccf738a44d8ec588d7d214982224cdb050a046 SHA-256: 16d631906ed531e12fb271e58237aee01680b80e00b8684dda3d8c718ad07074
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/123?utm_term=a+god+in+ruins+pdf PDF link annotation
    • http://domainlimax.xyz/bawusexapd43po.pdfIn PDF document text
    • http://joxuxodojej.22web.org/numerologia_cabalistica_gratis.pdfIn PDF document text
    • http://sanatoriy-izumrudny.ru/el_pensamiento_moderno_luis_villoroo1ybw.pdfIn PDF document text
    • http://kixorita.22web.org/centos_6_live_cd_iso.pdfIn PDF document text
    • http://kersita.space/cubase_8_maczo0fr.pdfIn PDF document text
    • http://ig-mediateam.net/96352810612qaeov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tirujukixiw.epizy.com/46170546798.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/15713874354.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/factors_affecting_academic_performance_thesis.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/the_assassination_of_jesse_james_book.pdfIn PDF document text
    • http://gejulakan.epizy.com/asus_bios_update_usb_format.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/batux.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/lezunod.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/gigabyte_x299_aorus_gaming_7_manual_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/mevegi.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_off0000e209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE209 4956 bytes
SHA-256: 0a4cc3ee8f61c1ec632a4eb1212e1f1ca5df4fc27b9b3472ae196d01865161e5
font_01_sfnt_off0000f2ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FF 10556 bytes
SHA-256: f8a9d92914090b52a94bc5fdd41b7711055c8afe9326d127f3bc6c0367f0203d