Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb3d30e841caa6da…

MALICIOUS

PDF

70.1 KB Created: 2021-02-12 06:39:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 1cd44154bbc61f4e73362a3bfbe70f87 SHA-1: 989d296970a41ebe1b5f4a228fe42d4b19353cab SHA-256: eb3d30e841caa6da58d3f307bc926ca7a11623c79f397604c189f000df2076c2
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious URL, likely intended to deliver a malicious payload or phish for credentials. The document body, though partially corrupted, suggests a lure related to pet weight charts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/123?utm_term=great+dane+lab+mix+weight+chart PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4480148/normal_5fea1f2c4671c.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/vuforewebub/zusiti.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/11494230057.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/25678628994.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/emulator_call_of_duty_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/sokinagizobeweluwajewad.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/cinderella_solution_system_free.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/blanca_nieves_y_compania_english.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/sullivan_algebra_and_trig_9th_edition.pdfIn PDF document text
    • http://buwumipulufi.epizy.com/sewigekidabosibefagekobo.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/android_ab_testing_framework.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_off0000d5c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C6 5504 bytes
SHA-256: e086026b5202dd2bd9b3a054195df8c5eded83976746c4c8f37f553f0cbaa4ff
font_01_sfnt_off0000e86d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE86D 10340 bytes
SHA-256: 009c49968233e57afe647ab60f629c211efe06d2fcf47ad9cdf87a19460fd753

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