Malicious PDF — malware analysis report

Static analysis result for SHA-256 db238a3889bc55a6…

MALICIOUS

PDF

72.6 KB Created: 2021-02-28 11:56:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3462d4a561f622ce27422b38421cdaaa SHA-1: 3b272c9a65d1b5376c22db7e154ab8e5effc4cda SHA-256: db238a3889bc55a62ff5563003a199a154e742a2bc4314a0bf14931babc5a9a1
96 Risk Score

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 0.9997

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://dugedepap.ru/strik?utm_term=why+does+my+jenn+air+oven+keep+beeping PDF link annotation
    • http://suzamajotibe.mywebcommunity.org/indonesia_is_the_largest_economy_in_southeast_asia.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/kowabazur.pdfIn PDF document text
    • http://profer-opt.ru/avaya_one_x_communicator_certificate_installation_guidekv4fc.pdfIn PDF document text
    • http://fesotisifofil.mygamesonline.org/persuasive_speech_topics_for_8th_graders.pdfIn PDF document text
    • http://italy-small.space/aleph_paulo_coelho_meaning2cehy.pdfIn PDF document text
    • http://tophomework.space/dixenulativivamunonisi48kb2.pdfIn PDF document text
    • http://mutujejeturuduf.medianewsonline.com/civil_engineering_firms_in_atlanta_ga.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/mekonulegipero/amcor_amd_7200_dehumidifier_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/angular_form_onsubmit_validation.pdfIn PDF document text
    • http://pojuzuduxotazup.epizy.com/jetudujefefederu.pdfIn PDF document text
    • http://juranakowi.rf.gd/85763136044.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/biochemical_evidence_for_evolution_lab_12_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/wpf_binding_string_format_multiple.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_off0000db98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB98 5796 bytes
SHA-256: 371db28f3aab73c7ad4b653f56cdbdd36727c574c4806f2ff034caf3af36bcd5
font_01_sfnt_off0000ef3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3D 11160 bytes
SHA-256: ff0b68e40c9a55446096a0f4cf28abc750ff4253f5cfb4f6606658ce2c2c5353

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