Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f5a9ceb170aea8…

MALICIOUS

PDF

72.5 KB Created: 2021-02-27 09:05:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3ba48e2e864143b547c7e84c739f9c9b SHA-1: 9c0c8e579d8cb3445ee581e4c47f94f5bdf63939 SHA-256: f0f5a9ceb170aea88d5db8bacba62919efb8580adcb3088557b896a43e9acf01
136 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
  • 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=stomp+brothers+johnson+piano+chords PDF link annotation
    • https://cdn.sqhk.co/webepinovet/jijIUjg/pumpkin_carver_icp_lyrics.pdfIn PDF document text
    • https://ritixalasan.weebly.com/uploads/1/3/4/2/134265532/barimuduwuk.pdfIn PDF document text
    • http://zopokujejisolan.getenjoyment.net/wiragojeba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376088/normal_6039bbd3e5bfc.pdfIn PDF document text
    • https://levapexufusetij.weebly.com/uploads/1/3/4/9/134904519/5762718.pdfIn PDF document text
    • https://sunarikibuniteg.weebly.com/uploads/1/3/1/3/131381519/5274188.pdfIn PDF document text
    • https://zixijatujomalul.weebly.com/uploads/1/3/5/9/135962278/vazem.pdfIn PDF document text
    • https://cdn.sqhk.co/vujejanar/2jDjhmM/54372796811.pdfIn PDF document text
    • https://cdn.sqhk.co/rifojimuna/Bsjethe/golden_goal_turf.pdfIn PDF document text
    • https://jerepubiz.weebly.com/uploads/1/3/1/6/131606505/4220724.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/22932112690.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/vefagotoje/xarasiginuw.pdfIn PDF document text
    • http://biwosagamivi.myartsonline.com/how_to_install_first_alert_smoke__carbon_monoxide_alarm.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/aadhaar_card_by_mobile_no.pdfIn PDF document text
    • http://sulorowanutabu.atwebpages.com/falling_man_9_11_film.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/dakuza.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/cole_nussbaumer_knaflic_storytelling_with_data.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_off0000dc55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC55 5600 bytes
SHA-256: 67287b438308722856b29d70e79cca7c4ed7691560d17322218e66b6ed99b9d2
font_01_sfnt_off0000ef2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2C 10868 bytes
SHA-256: 79518bc449f1796b05c9bf6f02e6ad68789900155951fe831147a09e30eb45dc