Malicious PDF — malware analysis report

Static analysis result for SHA-256 7425319f6a12ef05…

MALICIOUS

PDF

173.7 KB Created: 2021-05-01 13:21:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a4cdb4c0c946999a6b640d8030cc8706 SHA-1: c0cdb8b05a6d9c31f1454ea85c7091e237a84b11 SHA-256: 7425319f6a12ef05ba80b7395f3051e719295f52cb21a1a365c9001bae7efc4a
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to a malicious URL. The ML classifier and ClamAV detection strongly support its malicious nature. The embedded URL `https://druttle.ru/strik?utm_term=magna+carta+why+was+it+written` is identified as a redirector, likely leading to a phishing page designed to steal user credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=magna+carta+why+was+it+written PDF link annotation
    • https://cdn.sqhk.co/barugogip/lLIiaif/netflix_login_change_password.pdfIn PDF document text
    • https://cdn.sqhk.co/dutebevon/Rghjhhj/paypal_smart_connect_application.pdfIn PDF document text
    • http://xesapuwax.mywebcommunity.org/free_crochet_patterns_for_baby_blankets_easy.pdfIn PDF document text
    • https://cdn.sqhk.co/jabisopomuxo/bRgfcha/36672495565.pdfIn PDF document text
    • http://kazimibi.getenjoyment.net/93800348137.pdfIn PDF document text
    • https://cdn.sqhk.co/figakeves/2ghgiMi/bamodufiribapusofar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472506/normal_6019487bdb7da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369901/normal_5fdaabb624ead.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/libowebujakux/wisusevepolinikudekiba.pdfIn PDF document text
    • http://lariroze.rf.gd/32752185441.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/84022502970.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/chamma_chamma_video_song_pagalworld._io.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/instructions_for_knex_tank.pdfIn PDF document text
    • http://tabifewegijip.epizy.com/america_s_next_top_model_episode_guide.pdfIn PDF document text
    • http://fawekeziba.rf.gd/76042892565.pdfIn PDF document text
    • http://namakanexir.atwebpages.com/sodenuladumivujerawobiji.pdfIn PDF document text
    • http://gamebunamol.rf.gd/how_to_reset_citizen_eco_drive_watch_e650.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/how_effective_is_emdr_for_anxiety.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/ramerisipuzuno.pdfIn PDF document text
    • http://mifevup.rf.gd/are_oil_filled_portable_heaters_safe.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_off00026cf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26CF2 5228 bytes
SHA-256: 9f8b286e40e42afc738b1d5d3d4c197e02c7eafda39de47170f8a6d4a9a68dd6
font_01_sfnt_off00027edc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27EDC 12492 bytes
SHA-256: 9da9040a6534be9dee1539eb898bc215533a03d4a73610fae5876deb75515def

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