Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a3b2f693a5e2bbd…

MALICIOUS

PDF

62.9 KB Created: 2021-02-13 07:13:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6299643c08ee0fbe7dd48fe55e5ec092 SHA-1: 8fee0762b2a1e42d8361b25e3a485ebd7b3d1daa SHA-256: 4a3b2f693a5e2bbde334a9b5f76111eaa6a3721b0a6bf3d13d717d9de81d87a5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/wix?keyword=santa+putting+presents+under+the+tree+cartoon PDF link annotation
    • https://cdn.sqhk.co/vomuvojovi/if4Rift/fevonalowubenatawa.pdfIn PDF document text
    • https://cdn.sqhk.co/vujalenan/hbjcsgh/lucky_block_addon_minecraft_pe_1._16.pdfIn PDF document text
    • https://cdn.sqhk.co/gunonutib/ijboijl/9131594874.pdfIn PDF document text
    • http://digitalmicroteter.xyz/music_online_free_for_androidc9nk0.pdfIn PDF document text
    • http://2220202.ru/wokasosolonajelus2v45z.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxuvedije/hghhnge/57566731261.pdfIn PDF document text
    • https://cdn.sqhk.co/kazaluxi/6L3jjkk/health_tracker_watch_android.pdfIn PDF document text
    • https://wanibezitajijo.weebly.com/uploads/1/3/6/0/136000154/2f4f5.pdfIn PDF document text
    • http://odebayitrafikhizmeti.com/41280249948i5hvs.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/waxegatulo/bindiff_ida_plugin.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/communication_management_plan_template_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/barf_si_nirdosh_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/tatulerux.pdfIn PDF document text
    • http://wivufaw.epizy.com/aashiqui_full_hd_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/37843800625.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_off0000b9da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9DA 5408 bytes
SHA-256: c611b0de19fc5de5f33ae1543f1e63f0f448641e572a36a834963611e6a05bd8
font_01_sfnt_off0000cc2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC2F 10312 bytes
SHA-256: 0ff556edeab920910f55fbab6162d2810326fc18aad209b8342dc74f1da816e2