Malicious PDF — malware analysis report

Static analysis result for SHA-256 489691b10de77cbe…

MALICIOUS

PDF

67.0 KB Created: 2020-12-01 03:42:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 255637bc7c69c9fddaa798df5162e603 SHA-1: 973733d82d0ffca6198268645c1c17fad3dcc792 SHA-256: 489691b10de77cbeae7a6389002884a6b9835a0d524d279cbe1d4998cb99192a
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 0.9998

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://trafftec.ru/strik?utm_term=pilgrim+who+narrates+canterbury+tales PDF link annotation
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/fejofenud.pdfIn PDF document text
    • https://murozukuzofapu.weebly.com/uploads/1/3/4/7/134716639/f7f016c01967b.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/kovezodepugov/escardio_guidelines_acute_myocardial_infarction.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ea1fa8793968640865e0/t/5fc499843570fb44d1957820/1606719877598/latent_learning_behavior_psychology_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/jijuwanu.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/ib_physics_semester_1_final_review.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/47818614164.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1c3fc3dfdd95b60db3ffd/t/5fc29e7461e25426e18d4a2f/1606590069684/toni_morrison_romancing_the_shadow.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/about_last_night_free_movies_online.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/bodhisattva_vow.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/critical_thinking_an_extended_definition.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e555f7cf8c75402ae412/t/5fc5947618e72e5fdb973bf9/1606784118608/watch_birds_of_prey_online_free_reddit.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_off0000c6ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6EC 5548 bytes
SHA-256: beea36462b602e4064bcd046935ffc3f72b2159e173311bd9674e30fee08404a
font_01_sfnt_off0000d9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B4 11620 bytes
SHA-256: f2bf16277aac0605952c35d6ad5f43a4d2abaeea00647ebb86b7f3fea28fb306