Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8cecf8877fe1634…

MALICIOUS

PDF

85.1 KB Created: 2021-04-08 10:44:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ccf1cac27db43761d93eab858adf8b4 SHA-1: d53f4aeda2c0c51aa5f466f15368b9e6176b6975 SHA-256: e8cecf8877fe163456f5c7e0741d90d735531a5a5726e502bb183c4994a2146b
96 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, with the primary one being `https://botokaw.ru/strik?utm_term=biblia+textual+4+edicion+e+sword`. This URL, along with others, suggests a phishing or malware distribution attempt disguised as a document download. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or trojan distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/strik?utm_term=biblia+textual+4+edicion+e+sword
    • http://dasazopemobor.mywebcommunity.org/the_art_of_travel_alain_de_botton_download.pdf
    • http://lakshmi-store.ru/zaxuropbr6gi.pdf
    • https://static.s123-cdn-static.com/uploads/4489032/normal_5ff5cd41b5a3a.pdf
    • http://vobalemujumojak.mywebcommunity.org/how_to_reset_nuvision_tablet_to_factory_settings.pdf
    • https://cdn.sqhk.co/nuvaratuji/c3Lhiig/companion_for_dying_light.pdf
    • http://madoxorijegobe.sportsontheweb.net/canterbury_tales_notes.pdf
    • https://static.s123-cdn-static.com/uploads/4463272/normal_5feec00c950c7.pdf
    • https://cdn-cms.f-static.net/uploads/4419001/normal_6010ab6233e94.pdf
    • http://maska-respirator.shop/emotions_worksheets_for_adultskfsf2.pdf
    • http://talajudoxuxip.mygamesonline.org/10720053389.pdf
    • https://static.s123-cdn-static.com/uploads/4446174/normal_5feb34916cbcc.pdf
    • https://cdn-cms.f-static.net/uploads/4491414/normal_603afcc8ccfd5.pdf
    • https://cdn.sqhk.co/pasivuzuke/g456Wnw/amazon_echo_dot_3rd_vs_4th_generation.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://36071b1a-d853-4ad1-bccf-0ed894d94038.filesusr.com/ugd/906e9f_c3758624dd494c97bfdece8cc48fece0.pdf?index=true
    • http://luxupuxud.myartsonline.com/risk_assessment_steps.pdf
    • https://c779a0a5-5a96-4308-8c37-720837e0bdd2.filesusr.com/ugd/4f1d02_93d2de71a8fc492c800513fe84aa0bbc.pdf?index=true
    • https://b9eb3541-094c-4606-b101-17c2291fd6e1.filesusr.com/ugd/a18601_ba5befbc74314263b498185beda5335b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/99869344-af63-422a-b80e-2d79f02b049c/61763316505.pdf
    • https://bf68d742-fb98-404a-ab47-1dcf24f7df52.filesusr.com/ugd/83e7fd_23d7909cfc81478a88c64a105bd8acfc.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fcba313b-477e-4755-a0ad-65b36fe57f17/kesozi.pdf
    • https://uploads.strikinglycdn.com/files/9c924abd-7e1c-4052-b156-355600e567c6/pentax_k30_camera_price_philippines.pdf
    • 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_off00010ca1.bin
ba3288a8fafa8914c15605942deca6bdb87f009472a4fcbb16e3e43a44d9a6de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA1 5372 bytes
font_01_sfnt_off00011f12.bin
d4058657e28eede6fd0cca8c5fe3bd235e4e068a274973994e8557802cb8a8e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F12 12592 bytes

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