Malicious PDF — malware analysis report

Static analysis result for SHA-256 372372b36aa2bd29…

MALICIOUS

PDF

73.6 KB Created: 2021-03-26 01:30:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 0d7c0159b653c10fd165f61acdd66cbc SHA-1: f16c2abe92e81bd70e097f15b5363fbe8d40d234 SHA-256: 372372b36aa2bd290b986f7c46ea7b62774888f0602a9e29d1b91fd26d571a92
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and a machine learning classifier. The document body, though heavily obfuscated, suggests a theme of 'disinformation'. The presence of external URIs and the overall detection by multiple security tools indicate a phishing or malicious content delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/123?utm_term=dcms+committee+disinformation PDF link annotation
    • http://cheapkeys.site/48554593563jsy6g.pdfIn PDF document text
    • http://vienvozvrat.site/intermatic_wh40_timer_partsteqlv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e55e8ae7-1214-43a6-ae38-732987955f1e/30062331744.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/83056120058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/912b55f4-8c4b-442a-8515-ec7342def24b/tukugojeladafama.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da9a80bb-2c01-4c11-b5a5-e3cc88e7f115/42249766730.pdfIn PDF document text
    • https://s3.amazonaws.com/dogevazapiwediw/50726004503.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/little_shop_of_horrors_songs_dentists_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bf6bf7f-abe6-4e15-9a12-6c1ef64d78b4/lagovugurona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/265f51f6-175f-4698-9d44-c7df3f4acd2a/3_types_of_services_ap_human_geography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9a5a3e5-587c-4710-9e07-17834e720014/vofal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a1f281a-1fb5-4372-9415-af5b267193b6/franz_kafka_the_trial_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/758c4138-28e2-4794-9582-607079bbbe2b/55806528926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cea0d805-8455-4cc7-a539-e8356f151544/totififusulubulewaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/982a9c24-adbe-43c0-a34c-e5b3d35e2ba9/72345065666.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7e71d41-f809-4717-b879-e3d5e793d025/20412677887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a7a729d-ca4b-4fd1-bc46-70f22db59745/intellicharger_new_i2_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/39683671270.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/dunkin_donuts_egg_white_wake_up_wrap_nutrition_facts.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_off0000e1f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F5 5132 bytes
SHA-256: 07e85cbfbc88e9cbb02c05685c163ebe29cdef7eae541e306c686ce39150be3f
font_01_sfnt_off0000f358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF358 11356 bytes
SHA-256: 6618ceff73a43ddffd744ada961b5aabe5139d206a6283781e27ace7b482b409

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