Malicious PDF — malware analysis report

Static analysis result for SHA-256 f92000a285a39a48…

MALICIOUS

PDF

71.9 KB Created: 2021-03-14 09:39:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18266c818f6f430c73e4581a6c02885f SHA-1: f21d59e0271ad7430082254f450dd8638d70f292 SHA-256: f92000a285a39a48577620d537f5d4f8aca9b468058a11b270dcf2a34f8adcb7
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to a 'Vacmaster vp210 manual', likely a lure to trick users into clicking the embedded malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/wix?keyword=vacmaster+vp210+manual PDF link annotation
    • http://lolkek.xyz/warframe_limbo_prime_2020l4mea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474231/normal_5feb72d1a0ff4.pdfIn PDF document text
    • https://cdn.sqhk.co/munenetifu/dFpcibl/lujavokoz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448720/normal_5ffb58fbe9b53.pdfIn PDF document text
    • https://sexuviruzimi.weebly.com/uploads/1/3/2/8/132814305/tolozuzu.pdfIn PDF document text
    • http://universal-kirov.ru/multiple_intelligences_test_howard_gardners_mi_model2ols3.pdfIn PDF document text
    • https://cdn.sqhk.co/gesokusa/fgejac7/mikusojolepugolebe.pdfIn PDF document text
    • http://tozidak.mygamesonline.org/31924713679.pdfIn PDF document text
    • https://fadasizoguwo.weebly.com/uploads/1/3/6/0/136050507/dugemozo.pdfIn PDF document text
    • https://cdn.sqhk.co/dakuwuwuzije/gcViiQH/vidasudoralewot.pdfIn PDF document text
    • http://fitdieta.com/21290950336n0pdx.pdfIn PDF document text
    • http://inscarusa.info/oppa_gangnam_style_hd_video_song_download2wgm1.pdfIn PDF document text
    • http://wiinorama.fun/spanish_1_midterm_exam_answers_edgenuityeayin.pdfIn PDF document text
    • http://bossyonlinex.com/demonstrative_pronouns_for_grade_1uob09.pdfIn PDF document text
    • http://jiteruruw.sportsontheweb.net/java_interview_questions_and_answers_for_project_manager.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/ggjdia5/lelisixobebevape.pdfIn PDF document text
    • http://udilische.club/3d_photoshop_cs6_software_free50rf9.pdfIn PDF document text
    • http://worldthailand.fun/airac_cycle_1811bz8vh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425230/normal_601acf989ef73.pdfIn PDF document text
    • http://yazansoft.com/canyons_ski_mapd2euo.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/20899495130.pdfIn PDF document text
    • http://medicinfo.online/vk_publications_accountancy_class_12_solutionsby18s.pdfIn PDF document text
    • http://tawaguf.scienceontheweb.net/star_wars_bloodline.pdfIn PDF document text
    • https://safubijob.weebly.com/uploads/1/3/2/6/132682970/kiroxala.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://kabuzore.atwebpages.com/wulasitevosamul.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdd5.bin
9de125ed41ded166c1d6a280ef3a5aec9486c341cac773c4320af265134c5b12		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD5 5156 bytes
font_01_sfnt_off0000df51.bin
022a567b5899c578af9b1bbdb7853d0e4099fd230d0a8b8742368b2c82dde0a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF51 10760 bytes
font_02_sfnt_off0001040e.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1040E 4324 bytes

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