Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f34a2713b4365e4…

MALICIOUS

PDF

66.1 KB Created: 2021-02-06 11:38:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: fe88f2130ed57d657808f668ba64a3bc SHA-1: 269b7b8b9a57c480a408e1e1aeadd83a1f6f5bd8 SHA-256: 9f34a2713b4365e4b8e15440e06e356eb420ed629b2c3d3c38ecd53de8b751f3
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/aws?utm_term=bhoot+fm+2+november+2018+episode In PDF document text
    • https://cdn.sqhk.co/lilomovetum/ij32ij4/light_presets_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sawibevas/jajbHCs/aristocrat_slot_games_for_pc_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/aiaWKji/54979385.pdfIn PDF document text
    • https://cdn.sqhk.co/tenokesime/TFjjpia/dwts_2020_scores_week_1.pdfIn PDF document text
    • https://cdn.sqhk.co/malevevipali/ggifjgE/taichi_bubble_tea_menu_niagara_falls.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuwutitaw/Hjcibhe/suvomogibifakagub.pdfIn PDF document text
    • https://cdn.sqhk.co/zifuvifiweva/djegehd/17300369186.pdfIn PDF document text
    • https://cdn.sqhk.co/dajusonas/Gfgciiu/air_traffic_controller_salary_ireland_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/jutigurotow/gzjcigW/rubavowarevowexoxeralij.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/k2ig0gj/redofotubuvejo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fusizizugunu.epizy.com/63461481444.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/satoxavararorulexamun.pdfIn PDF document text
    • http://bibirosomuxir.epizy.com/wimuxe.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/chekka_bhajana_songs_telugu_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/jet_8_bench_grinder_manual.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_off0000c401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC401 5808 bytes
SHA-256: 9aab55f959d038da2a8c60f8000e62612bccfbff081d88efc93212d18e8e9ca2
font_01_sfnt_off0000d7ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AB 10540 bytes
SHA-256: 1b6ec6cc23065c3755763b2579f78d62c537ed91d989b11c997f46123749ea6e