Malicious PDF — malware analysis report

Static analysis result for SHA-256 2544157d84e6758e…

MALICIOUS

PDF

76.0 KB Created: 2021-03-31 13:09:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 8465f88590efd7cd0295d5284c6c377e SHA-1: e05d0107cb32f58f939121edba7d2ecdf5304734 SHA-256: 2544157d84e6758e01f88d90bd7c1027c9eca9ad75fe98e22e797b9716259a51
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains an image lure that redirects to the URL 'https://xezojetit.ru/123?utm_term=forces+worksheet+3', indicating a phishing or malware distribution attempt. No scripts were extracted, but the presence of external URIs and the overall detection suggest a malicious intent to lure users to a compromised site.

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://xezojetit.ru/123?utm_term=forces+worksheet+3 PDF link annotation
    • https://cdn.sqhk.co/noneniwetav/Eid7icc/this_is_home_switchfoot_lyrics_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/luzorisu/Xghc9hd/dragon_and_snake_compatibility_business.pdfIn PDF document text
    • https://cdn.sqhk.co/tezizejaropu/fjgigib/live_football_tv_hd_2020_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/jagejope/idPijEf/bagadadorugububa.pdfIn PDF document text
    • https://cdn.sqhk.co/givesaxi/rggTgfM/hero_splendor_bs4_online_booking.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/Gijjhq7/vepoxonojimugapotap.pdfIn PDF document text
    • https://cdn.sqhk.co/rajunakeb/EKWjcji/thomas_friends_thomas_halloween_adventures_dvd.pdfIn PDF document text
    • https://cdn.sqhk.co/vokalater/idiiibC/free_music_downloader_mp3._descargar.pdfIn PDF document text
    • https://cdn.sqhk.co/salulilo/6hcnjiZ/saxiditudojizage.pdfIn PDF document text
    • https://cdn.sqhk.co/wotutovebo/jrDiaji/76144211968.pdfIn PDF document text
    • https://cdn.sqhk.co/setuboluraje/gxgdAjb/lifenunobabo.pdfIn PDF document text
    • https://cdn.sqhk.co/burexewejam/jetPtsI/translate_english_into_japanese_words.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/38ba538f-ee5b-4489-a6b5-998eec9995a9/61747172372.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52ab35fd-e793-4c0e-b6dc-7191ade6fe35/zunesuruzisosojisoz.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/munelipisubufenoge.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/fossil_wyvern_guide_osrs.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/nature_wallpaper_new_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wizomoravazub/82447570070.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEF 4920 bytes
SHA-256: a38312446553d2042678b5b5b4cfa59250e774ea96133d4f87ce873c94bd241e
font_01_sfnt_off0000ffc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC6 10360 bytes
SHA-256: 257af90b8996d1f47da883f3f38da368eafcde051e22498e13a4286ad613265c

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