Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c5e17c0673d5743…

MALICIOUS

PDF

83.6 KB Created: 2021-03-30 12:01:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 41e4a297d99a46054acc96aa3af0c218 SHA-1: 5614d5df8c567bd50769e8c7ceb62a2ba1d5f5b0 SHA-256: 2c5e17c0673d5743c9a736d04382beb38e42b16e41a37df45e359b53497bf9be
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. ClamAV and ML classifiers identified this PDF as malicious, specifically a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • 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://zajinet.ru/wix?keyword=histoire+de+ma+vie+pdf+espa%25C3%25B1ol PDF link annotation
    • http://jerimujolegem.medianewsonline.com/chinese_calligraphy_practice_paper.pdfIn PDF document text
    • http://vituloza.sportsontheweb.net/loteria_del_abecedario_para_imprimir.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzufoxo/iegeP7o/burger_king_nyc_delivery.pdfIn PDF document text
    • http://togaxifobuf.mypressonline.com/61678574625.pdfIn PDF document text
    • http://jokojujut.medianewsonline.com/survival_of_the_fittest_best_quotes.pdfIn PDF document text
    • http://bejisosubonito.sportsontheweb.net/life_application_study_bible_nlt_leather.pdfIn PDF document text
    • http://kipokefurur.mygamesonline.org/sp3d3_hybridization.pdfIn PDF document text
    • http://palubofapejuraw.mywebcommunity.org/brush_lettering_with_kelly_creates.pdfIn PDF document text
    • https://cdn.sqhk.co/gizukakom/itHijja/dj_los_dol_baling_baling_bambu_mp3.pdfIn PDF document text
    • http://jigikujed.scienceontheweb.net/26796898631.pdfIn PDF document text
    • http://towufato.mywebcommunity.org/pudovalofowolege.pdfIn PDF document text
    • https://cdn.sqhk.co/labifikup/Ridvia5/56117085857.pdfIn PDF document text
    • http://digovin.getenjoyment.net/gurifulupolewafafalepoj.pdfIn PDF document text
    • http://dajexori.mypressonline.com/how_to_use_bosch_pocket_scan_obd_1000.pdfIn PDF document text
    • http://lipuwisapi.mywebcommunity.org/euripides_medea_and_other_plays.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kepofif.onlinewebshop.net/environmental_risk_assessment_steps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4a5cce4-4b26-4d7d-9947-310da0546580/73832609664.pdfIn PDF document text
    • http://namakanexir.atwebpages.com/what_oil_for_4.7_dodge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eae07528-ace7-4ff7-a3ad-53bc8746654b/tcl_c6_65_inch_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/109f1a4d-8df4-4390-9335-de932ef49ca2/pesisoli.pdfIn PDF document text
    • http://timerojulawu.myartsonline.com/75231369894.pdfIn PDF document text
    • http://fuvuxejuv.myartsonline.com/ignou_bcom_solved_assignment_2020_19_free_download.pdfIn PDF document text
    • http://jifisuxevizek.myartsonline.com/commercial_cool_window_air_conditioner_installation.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_off00010393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10393 5420 bytes
SHA-256: ceac0feb3caafe24d66e7ce2bd911ac95977f02549ebcc3a66d0d2c6159bd57e
font_01_sfnt_off000115ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115AE 13328 bytes
SHA-256: 951e47e1f4b14e2571b9c5aa5cc32b851350e3333e868e89e50a4fd3682a1b1d

Open this report in the interactive analyzer, or submit your own file for analysis.