Malicious PDF — malware analysis report

Static analysis result for SHA-256 14618f1b3783f719…

MALICIOUS

PDF

94.1 KB Created: 2021-03-13 23:50:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: df40acdd8c31d56b135f9947a87da4ff SHA-1: 1d75e85037bcfe9c0456774221aebb7eee137995 SHA-256: 14618f1b3783f71989923d018d62838266b1cd7c226c9a646a30e53bad3476fb
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs, many pointing to disposable hosting services, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' highlights the suspicious nature of the linked content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=similarities+of+agrarian+reform+and+land+reform PDF link annotation
    • http://pixalowedu.22web.org/wofozelajixewexazegusag.pdfIn PDF document text
    • https://cdn.sqhk.co/dodirorip/cxeaQjg/12728450378.pdfIn PDF document text
    • https://cdn.sqhk.co/rawatajizefu/ie9bvZK/drift_zone_2_mod_apk_2._4.pdfIn PDF document text
    • http://takavejesutep.iblogger.org/nenobepizawowexamujera.pdfIn PDF document text
    • http://simcars.ru/zozepog64gq9.pdfIn PDF document text
    • http://ejqy.com/7210279689t6zea.pdfIn PDF document text
    • http://dofukatejipoz.66ghz.com/jimubizuxumufozawikonodiw.pdfIn PDF document text
    • http://reabook.online/jelidaxibimobiraragupewim0lgba.pdfIn PDF document text
    • https://cdn.sqhk.co/kewukapugino/ZgipAks/pediatric_blood_disorders_list.pdfIn PDF document text
    • https://cdn.sqhk.co/zogowefu/haieidM/football_manager_2020_team_database.pdfIn PDF document text
    • https://cdn.sqhk.co/bepoweruga/dmhaKhd/slow_motion_maker_download_free.pdfIn PDF document text
    • http://avbox.org/93739407073w86yt.pdfIn PDF document text
    • https://cdn.sqhk.co/xedaberetaj/hMocfgc/app_assistant_huawei_y9_2019.pdfIn PDF document text
    • http://tifekojeje.22web.org/vawevigunatubafenizipeta.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lopumupukerodu.epizy.com/junji_ito_art_book_ikei_sekai.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2236531c-ec57-4ad2-8c81-8f6a23684e4c/affect_definition_mental_status_exam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2bb608f-2995-46e9-98e4-fcca200c15c3/how_to_produce_music_for_beginners_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6ed4f75-88cc-437f-9353-09b86b27a9bc/tasupozuxujapo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4963097b-c764-487c-bc0f-683d6f76d5ef/fazekov.pdfIn PDF document text
    • http://kafozubasopuji.rf.gd/articles_partitifs_exercices.pdfIn PDF document text
    • http://kubosew.epizy.com/what_does_get_coffee_mean.pdfIn PDF document text
    • http://vejidot.epizy.com/chicago_public_schools_calendar_2015-16.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_off0001300b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1300B 5332 bytes
SHA-256: adc590c8b954ada92a6c27a6b6cbc436f91de899c13b56ea7a9fee13abced148
font_01_sfnt_off0001420f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1420F 11672 bytes
SHA-256: 2272ef48a0f358acc06dd784c62302b7bed903f62775918d9973e05df90ca38d

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