Malicious PDF — malware analysis report

Static analysis result for SHA-256 4569b86ced61fec8…

MALICIOUS

PDF

73.9 KB Created: 2021-02-13 08:26:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 43518b39fbcf2212fd2e252cbeef2b62 SHA-1: 5e3815248e5dbe8e955c166803e9681713d88fa1 SHA-256: 4569b86ced61fec8e16b6cd2dd353cd033284b8b349f858bc1effa6d05324c56
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://druttle.ru/wb?keyword=best%20boot%20animation%20app%20for%20android PDF link annotation
    • http://believes.space/56353870166e05ab.pdfIn PDF document text
    • http://cloudmarket.website/dututinufif5jyh6.pdfIn PDF document text
    • http://momsmall.space/429047509134oo4e.pdfIn PDF document text
    • http://smotrikino.fun/gta_iv_launcher_crack_downloadorswk.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/gihjchc/78683412175.pdfIn PDF document text
    • http://olipaka.xyz/suzuki_owners_manual_motorcycle8euvq.pdfIn PDF document text
    • http://keto-menu.online/tasopewetov5vcbe.pdfIn PDF document text
    • http://crysety.xyz/sanolehfcog.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/Op4eii0/59670465333.pdfIn PDF document text
    • http://technodom11.com/dallas_fort_worth_weather_allergy_reportewh5d.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/lanubili/forces_and_motion_reading_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/73541603058.pdfIn PDF document text
    • https://s3.amazonaws.com/padanivozeb/egyptian_gods_and_goddesses_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/android_auto_apps_virus.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/bobokaniwibutigusiregiku.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_off0000e2aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AA 5344 bytes
SHA-256: c532ba664b985675f0265f0dfe917f16847063f9149c97915113a9c84532695c
font_01_sfnt_off0000f4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BB 11060 bytes
SHA-256: 4a6b2b5d24642d405eee1b73ad5c3977a796503344c239d229907e5cf88ff40a