Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b9e537066b930f4…

MALICIOUS

PDF

72.5 KB Created: 2021-03-15 12:25:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: a2e6cdc5a80d1f57791167c3ece201c9 SHA-1: 22461d97b00f67132217eb3029ff7803bc0b2e9a SHA-256: 5b9e537066b930f462d52e2b6a59222b9ea20f0b1af5878080f04f60c2d345e7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to reference a template for an online store, suggesting a phishing or scam lure.

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://resalured.ru/123?utm_term=template+blogspot+toko+online+gratis PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4476274/normal_60070d926968b.pdfIn PDF document text
    • http://pufonorigaji.22web.org/18016150502.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451368/normal_5ffd52987c13c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tilebimelexin.epizy.com/48485750721.pdfIn PDF document text
    • http://davaroka.rf.gd/jerugapisidibidetab.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/omron_hem-711dlx_blood_pressure_monitor.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/warhammer_40k_rulebook_online.pdfIn PDF document text
    • http://vugixemavofagen.epizy.com/73889513761.pdfIn PDF document text
    • http://selifesupenikiv.epizy.com/capacity_utilization_factor_vs_performance_ratio.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/printable_general_knowledge_quiz_and_separate_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/pulse_secure_per_app_vpn_android.pdfIn PDF document text
    • http://zuvolape.epizy.com/17492450018.pdfIn PDF document text
    • http://bufalirafuma.epizy.com/todogikisudegofokupopa.pdfIn PDF document text
    • http://lamekukibudinos.epizy.com/best_app_for_ipad_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/formic_aldehyde.pdfIn PDF document text
    • http://piwegotu.rf.gd/xelatovolevi.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_off0000df3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3F 5292 bytes
SHA-256: 4dc43baf9e46985bd638d61102812ca121766b30dc1bb477048209abb44d9eca
font_01_sfnt_off0000f125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF125 10484 bytes
SHA-256: 8723459bf21a14e2bb7b9fbdf6855f720cb92a4fc7f21c53efbc88ac382fbd8d

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