Malicious PDF — malware analysis report

Static analysis result for SHA-256 c18438cee60ba2bb…

MALICIOUS

PDF

98.6 KB Created: 2021-04-07 10:03:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e7684e5949e2e2a5452a6c5b5ed92cee SHA-1: d8d5798ab85dccb8d67e3d58629ffbf324c20b37 SHA-256: c18438cee60ba2bbb0568790d01260d48a96da0dc13438fbe300d7e5b404d015
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-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=c+o+ka+full+form+english+mein PDF link annotation
    • http://pazujiz.mygamesonline.org/dynamics_365_business_central_development_quick_start_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/Kzgjijf/93629966196.pdfIn PDF document text
    • http://fiwazurenorin.iblogger.org/design_thinking_ppt.pdfIn PDF document text
    • https://cdn.sqhk.co/rinulazopun/q6hhGhc/59487218616.pdfIn PDF document text
    • http://viwavorikag.22web.org/sutigokunitavarapi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/34941968528.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/behringer_umc404hd_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/hong_kong_crs_reporting_period.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/reportable_irregularities_a_guide_for_registered_auditors.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/68080192494.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/kohler_cv15s_motor_for_sale.pdfIn PDF document text
    • http://lodumojokexiku.onlinewebshop.net/50178360789.pdfIn PDF document text
    • http://karokifewugasuz.onlinewebshop.net/como_funciona_el_cerebro_libro.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/happier_piano_sheet_music_ed_sheeran.pdfIn PDF document text
    • http://pusiruj.epizy.com/96962205708.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/binawituzujosovulir.pdfIn PDF document text
    • http://sivisalatifaba.rf.gd/wipakofekag.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/fugadixepujig.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_off00011612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11612 5152 bytes
SHA-256: 6dadf32aab1fe885e06332a90d59364c2c387761acb8ce8032ddeaccc6b70d80
font_01_sfnt_off00012771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12771 10524 bytes
SHA-256: 116e7fc68c630cfd637c0318cf2a3f00ab81d571216af40c434dadafd61b49e7
font_02_sfnt_off00014bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BC1 16936 bytes
SHA-256: fdb73aa6444618ea2edcc1cdc5afc61ff8a09e9f312ec3ec660020217b3d8baf

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