Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3e2a563b6de72dd…

MALICIOUS

PDF

102.7 KB Created: 2021-03-25 18:27:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 3671bbe491fcefa7577e4b49ae181b32 SHA-1: e98335b70fc6655055dc6a6f8d50d5f065680500 SHA-256: c3e2a563b6de72dd760f9b3b04f39298f227e46fb461774e8e49c45ddab705ee
134 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains numerous external URIs and is identified as a link farm on disposable hosting, suggesting it's designed to redirect users to potentially harmful sites. The presence of urgency lures further supports a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/123?utm_term=hemoptysis+nice+guidelines PDF link annotation
    • http://jamotovoxut.mywebcommunity.org/how_old_is_my_sw_38_special.pdfIn PDF document text
    • http://xsafak.com/ada_2018_diabetes_guidelines0uv0z.pdfIn PDF document text
    • http://vugaganopofom.mypressonline.com/technical_analysis_of_the_futures_markets_murphy.pdfIn PDF document text
    • http://mushygushysayings.com/car_racing_game_for_android_phonernpo1.pdfIn PDF document text
    • http://idealslim-italiaoficial.site/separation_process_principles_answer1b0i2.pdfIn PDF document text
    • http://ideal-it.fun/19931355557xhss9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413454/normal_60451418ce38d.pdfIn PDF document text
    • http://vuwimoxit.mygamesonline.org/converting_grams_to_kilograms_worksheet.pdfIn PDF document text
    • http://dusipoweg.mywebcommunity.org/publicity_definition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_6018663ab84b1.pdfIn PDF document text
    • http://usesoda.pro/vampire_diaries_season_8_episode_2_full_episode_online_freetquyx.pdfIn PDF document text
    • http://gnfcns.info/baldurs_gate_3_mods_multiplayer3ekyr.pdfIn PDF document text
    • http://stav-games.ru/80057856728ww62k.pdfIn PDF document text
    • http://vash-komfort5.ru/anforderungen_formulieren_englisch964it.pdfIn PDF document text
    • http://damvglaz2.xyz/chale_aana_song_by_mrjattfebhv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473041/normal_6050690f1daac.pdfIn PDF document text
    • http://phillipen.online/zifijomypjw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bafemiw.epizy.com/data_analysis_certification_course_online.pdfIn PDF document text
    • http://refowokewip.rf.gd/are_double_edge_safety_razors_better.pdfIn PDF document text
    • http://sovizaz.epizy.com/28569846042.pdfIn PDF document text
    • http://voxinuxo.epizy.com/devotional_songs_mp4.pdfIn PDF document text
    • http://deroluzotuz.epizy.com/cultura_regional_uanl.pdfIn PDF document text
    • http://bedipate.epizy.com/buyers_guide_fillable.pdfIn PDF document text
    • http://vuriruzuminomu.epizy.com/letodalogepotoguz.pdfIn PDF document text
    • http://peporedamef.epizy.com/87219927101.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15294 5152 bytes
SHA-256: 16229b37cb3524e722384511d9e38b81ad4b4d66aaa041bc76da84d8983f01d1
font_01_sfnt_off00016414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16414 12532 bytes
SHA-256: 136e3d8ebe138e1706a77338ba17a6e05e552c8e54aaf1b42c783df40efd37fc

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