Malicious PDF — malware analysis report

Static analysis result for SHA-256 855fbc934b9a6c88…

MALICIOUS

PDF

71.6 KB Created: 2021-02-23 14:08:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1496641ea04bc1f46955ac8b70732ce7 SHA-1: 545b42d975bcced157e58e9b82a34bafd9192a8c SHA-256: 855fbc934b9a6c88c71d2ec13ccb747d811920951abd3e9449d103abaae282b7
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://leonvi.ru/strik?utm_term=jack+and+the+beanstalk+the+real+story+movie+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452618/normal_6015b6d0b4d6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417029/normal_5fe6c0e670b37.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425759/normal_6001fe7664ee4.pdfIn PDF document text
    • http://appless.space/animaciones_y_transiciones_en_power_pointjip6z.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fajixe/68079622447.pdfIn PDF document text
    • http://satiruxusis.epizy.com/boyfriend_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/arabic_keyboard_android_devices.pdfIn PDF document text
    • http://vukigopi.rf.gd/sky_tv_apk_free_on_jazz.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/betaflight_configurator_github.pdfIn PDF document text
    • http://dawutanarav.epizy.com/java_8_collections_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/kikib.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/bespeak_forms_of_verbs.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/awol_full_movie_hd_free.pdfIn PDF document text
    • http://ruvatarojamun.rf.gd/36001862782.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/47024908174.pdfIn PDF document text
    • http://gekuvilis.epizy.com/5395972927.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/44423682456.pdfIn PDF document text
    • http://mowubuzedolilaf.epizy.com/19835514085.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_off0000d900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD900 5624 bytes
SHA-256: 8eaddcb32d6ea18debb7974e18fbd3129f5f3b0117c701bd9c4ba015d765617f
font_01_sfnt_off0000ec0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0A 10876 bytes
SHA-256: 11cc4bf49a0ae2234265c0bf05e38aa741fe390e705065cdbe703223b6eb8e5c

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