Malicious PDF — malware analysis report

Static analysis result for SHA-256 269961ab47ec228f…

MALICIOUS

PDF

75.5 KB Created: 2021-01-27 00:11:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3e08a0f7310156cc7d1313cc2d7251b1 SHA-1: 513f74ae8686e7394efc8684929363622cc27ce1 SHA-256: 269961ab47ec228f363911ea0ae4543def43495f7860924cc990fddd8791762c
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple high-severity heuristics indicating it is a phishing lure, using invisible links to redirect to a suspicious PDF hosted on a malicious domain. The ML classifier and ClamAV detection strongly support its malicious nature. The embedded URLs suggest a phishing attempt to trick users into downloading further malicious content.

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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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=define+great+grandaunt PDF link annotation
    • http://ewwe.space/como_descargar_zepeto_para_pckdhk6.pdfIn PDF document text
    • https://cdn.sqhk.co/fotenulutis/bjjiijt/islands_of_nyne_battle_royale_indir.pdfIn PDF document text
    • https://cdn.sqhk.co/bozutebux/nhchhid/circle_camera_effect_name.pdfIn PDF document text
    • http://securitycheckingbrowservkcom.xyz/19314740536e9w05.pdfIn PDF document text
    • https://cdn.sqhk.co/xewumoxu/fjgpGic/tom_and_jerry_cartoon_video_free_download_mp3.pdfIn PDF document text
    • http://qqkaxes.xyz/stress_management_techniques_wikipediagzf2d.pdfIn PDF document text
    • https://cdn.sqhk.co/lufelumad/hdhjgLd/microsoft_teams_web_login.pdfIn PDF document text
    • http://1yamal.space/38089706612vgjex.pdfIn PDF document text
    • https://cdn.sqhk.co/paxepilekot/gibgfje/hearts_on_fire_lyrics_cimorelli.pdfIn PDF document text
    • https://cdn.sqhk.co/wezufunin/jaEjjgg/88682903058.pdfIn PDF document text
    • https://cdn.sqhk.co/tapuvimixaxo/ahe7ggd/41051316155.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/6hbS18b/welowoneboritezuvit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mezexefobotero.epizy.com/burglar_bill.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6A 3080 bytes
SHA-256: c27397356458df967e98ea0c4997ed2eab6a5e1e4fcabafdede38242691d1c63
font_01_sfnt_off0000e66c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66C 4864 bytes
SHA-256: 81b2706d15605531d014cb61209f2ff206cb271cf43147922a84de3f6fd3d5de
font_02_sfnt_off0000f70f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70F 12988 bytes
SHA-256: 4a14f9191fc76d1afd3edf9609622c64ba6a72a9bbf601f3879a9afcc781d7fe

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