Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99347994629db9e…

MALICIOUS

PDF

77.8 KB Created: 2021-03-03 04:05:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7a7554251f92d0b2fda030c15f6e376c SHA-1: 8b889bed084598c7b7b43cf77a7a3b15f36a4e86 SHA-256: f99347994629db9e49643226b169bc2ffb994f917ceb45c76c66d4adcc4d2c70
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://dugedepap.ru/123?utm_term=stock+market+trading+hours+india` suggests a phishing or redirection attempt, likely to a site distributing further malware or collecting user credentials. While no scripts were explicitly extracted, the PDF structure and embedded URLs are strong indicators of a malicious document designed to exploit users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/123?utm_term=stock+market+trading+hours+india PDF link annotation
    • http://motikadumumelu.22web.org/99392033508.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/nudekufuxeju.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/yTLifhb/linking_verbs_definition_and_examples.pdfIn PDF document text
    • https://cdn.sqhk.co/nixibaraje/gicifD0/kenejupesesikexavat.pdfIn PDF document text
    • http://numulul.mygamesonline.org/lista_tascon_excel.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
    • https://s3.amazonaws.com/purufiz/gareselabopexom.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/zopitaxufak.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/papyrus_bold_font.pdfIn PDF document text
    • http://pejezal.rf.gd/cardassian_uniform_colours_sto.pdfIn PDF document text
    • http://puzegekizizovin.epizy.com/27987870015.pdfIn PDF document text
    • http://tadezaxe.rf.gd/conditional_probability_worksheet_section_12._7_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/please_see_below_email_for_your_information.pdfIn PDF document text
    • http://balunepikejevo.rf.gd/vixujilij.pdfIn PDF document text
    • http://tamegebodow.epizy.com/assamese_video_song_website.pdfIn PDF document text
    • http://kifobidurusidi.epizy.com/xiniwow.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_off0000e2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F3 5372 bytes
SHA-256: 0f8258255431585656382116580e7dd8b6bb7883495944c9adf98e81e66dd1ce
font_01_sfnt_off0000f4f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F0 11412 bytes
SHA-256: f3f8b08af567750210adb085e033c7a944f718f66a22e3fdcc2943a964cb81c3
font_02_sfnt_off00011bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BDE 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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