Malicious PDF — malware analysis report

Static analysis result for SHA-256 1378e1a7808831ee…

MALICIOUS

PDF

81.7 KB Created: 2021-03-23 11:11:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32c16f231da6bffca4b8b4b5aa7274fa SHA-1: 1330a0cfe1ca26ea13c4c56a3374c5cf15690ef8 SHA-256: 1378e1a7808831eea43223c901b19b253f1cedbb674057d823d685f580eac5d0
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, as indicated by the PDF_URI heuristic and ClamAV detection. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to be a lure related to a Keurig coffee maker, suggesting a phishing or scam attempt. The presence of embedded URLs and the overall detection by multiple engines point towards a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://vilenefex.ru/strik?utm_term=how+to+use+a+keurig+auto+off+set
    • https://cdn.sqhk.co/bamazaludez/jbjdjfO/81307462237.pdf
    • http://my-credit.info/how_does_death_cure_end_in_the_bookv6qra.pdf
    • http://outputqwvk.space/macos_add_watermark_to5nvij.pdf
    • http://inostrana.com/88082503106hwq9h.pdf
    • https://folobuwula.weebly.com/uploads/1/3/4/3/134374444/vupudo_jadafesosogim_wuxizokapode_lorojomifezow.pdf
    • http://verification-help.business/how_to_use_add_on_instruction_in_rslogix_500057n22.pdf
    • http://reduslim-italiaoficial.site/840419553647fxox.pdf
    • https://gasimela.weebly.com/uploads/1/3/1/3/131398285/luxilozufol_susatisetonij_refuxas_liwotatezataz.pdf
    • http://otomail.business/watchos_6_beta_8929an.pdf
    • https://wipukanutunuk.weebly.com/uploads/1/3/1/4/131437017/jafebogopu.pdf
    • http://afracheat4.xyz/7633167593bnpvt.pdf
    • https://cdn.sqhk.co/nedupugifuka/33igYRi/zaluritevepivog.pdf
    • http://polnews.xyz/ecosystem_notes_class_12_biologymijlg.pdf
    • http://lidlid.xyz/aerodynamics_of_aeroplane_wing5r207.pdf
    • http://nupesupo.mypressonline.com/77839715691.pdf
    • https://cdn.sqhk.co/tibakekavero/eDtQnxJ/68388588074.pdf
    • https://cdn.sqhk.co/gutinisiv/9he1kia/luzepabegolegazegod.pdf
    • http://tonemisi.medianewsonline.com/balancing_redox_reactions_oxidation_number_method.pdf
    • https://cdn.sqhk.co/xovikojux/geibjab/i_wish_grandpas_never_died_lyrics_chords.pdf
    • http://levojefozaloro.mywebcommunity.org/48415215556.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://piwakitidi.onlinewebshop.net/are_dna_tests_very_accurate.pdf
    • http://bejanifezilo.atwebpages.com/ap_grama_sachivalayam_notification_telugu.pdf
    • https://1c896d37-30d1-4b4d-9537-98f963aae812.filesusr.com/ugd/865d50_1c99443da0014a37a2f112858fd58687.pdf?index=true
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_89dce3a2113a445bb3078d6c561b1482.pdf?index=true
    • https://4253c66a-660d-4c83-b31d-f715833d547b.filesusr.com/ugd/d9e9a0_a10160e8bf194531bfa8fb0483c8bb11.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010370.bin
aeb34385fb5777c53e07541c2094ea8769e16af852f283d441b0de6cd3131da7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10370 5020 bytes
font_01_sfnt_off000114a9.bin
f1106e8ba3e09349fc00b46f98c66937281c47d8ecb256567cbd12848e110919		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114A9 10816 bytes

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