Malicious PDF — malware analysis report

Static analysis result for SHA-256 60652b7548aba53d…

MALICIOUS

PDF

90.9 KB Created: 2021-02-19 07:41:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ed25d9fe05de4b227963143e7e902bd5 SHA-1: cc15968d885128bf67225bfc7aed6a3735304d6e SHA-256: 60652b7548aba53d07a113cdf5c7d823ead8cd1bcd679ac5869d27c1dd18955c
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with several pointing to known malicious redirectors and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=kawasaki+mojave+250+carburetor+adjustment In PDF document text
    • http://keto-s1.com/48252828127ba0bp.pdfIn PDF document text
    • http://fojozefamofu.22web.org/3d_video_hd_1080p.pdfIn PDF document text
    • https://cdn.sqhk.co/lilavokolet/hhgigfw/tigumawej.pdfIn PDF document text
    • https://cdn.sqhk.co/gederanew/jgicjgK/amc_24_hampton_va_movie_times.pdfIn PDF document text
    • http://kengoru.space/cuisinart_deluxe_convection_toaster_oven_costcovujmf.pdfIn PDF document text
    • https://cdn.sqhk.co/sabepakofo/jjix04R/rasibuzejupofakepa.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/djdWggi/burger_shoppe_27th_ave.pdfIn PDF document text
    • https://cdn.sqhk.co/suvezadamut/Xjc4u6M/63106641815.pdfIn PDF document text
    • https://cdn.sqhk.co/futevanu/gcRsgiA/97553026964.pdfIn PDF document text
    • https://cdn.sqhk.co/tapuvimixaxo/eFCgfKY/minecraft_exploration_worlds.pdfIn PDF document text
    • https://cdn.sqhk.co/gizivapejoko/tgdhflD/sozudaribabanov.pdfIn PDF document text
    • http://autoport76.online/planilha_controle_leiteiro_excel4y9k7.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/hcFgirW/moto_racing_3d_game_download_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/mixubiki/jeY1uhh/cowboy_vs_zombies_games_for_pc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://majazizekor.epizy.com/ligupigobisarixe.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/xorawojesam.pdfIn PDF document text
    • http://jovawat.epizy.com/vmware_vcenter_6._7_u2.pdfIn PDF document text
    • http://xazabivi.epizy.com/68826777226.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000126a9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x126A9 22984 bytes
SHA-256: bc0244ef20637831d9bb66331ce7483cd52c0f439f3908a2e1fa671ef988890b
font_00_sfnt_off0000eddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDB 5732 bytes
SHA-256: 8cb44d9325452f057d8019db4462cd80c35304d02e7f1d962598d1df1c1cba32
font_01_sfnt_off0001015f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1015F 10828 bytes
SHA-256: 7522a839142c285266b997b2ff47c12ba56fa28924813ead6381b54af7e4c3df
font_03_sfnt_off00014de6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DE6 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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