Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc1770a9e12cc9c…

MALICIOUS

PDF

98.6 KB Created: 2021-02-12 04:13:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 7d13dcdcd0a7bb5830cb12cf15e96246 SHA-1: 1dba3e6fa1aded9aa8116633127665bf1551d322 SHA-256: ffc1770a9e12cc9c387d993db11360753e2d3e5e510b47b89e6fefa0f908eaef
136 Risk Score

Malware Insights

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

The PDF contains a heuristically identified malicious link to 'nikecortez.net' which is likely intended to deliver a secondary payload. The document body, though heavily obfuscated, suggests a lure related to a video game trophy guide, aligning with phishing tactics. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://druttle.ru/wix?keyword=broken+sword+5+the+serpent%2527s+curse+ps4+trophy+guide PDF link annotation
    • https://cdn.sqhk.co/ributexovek/OZjbOhe/business_insider_logo_fails.pdfIn PDF document text
    • https://cdn.sqhk.co/gukitane/ejcjggg/demi_lovato_skyscraper_karaoke_texty.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382643/normal_5fd880b11b776.pdfIn PDF document text
    • https://cdn.sqhk.co/fewibefanid/LnhfZOg/piano_tiles_3_download_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381756/normal_5fe12d0c1dc65.pdfIn PDF document text
    • http://nikecortez.net/nakinabewejowodiragizadibpvian.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450147/normal_60039812cda25.pdfIn PDF document text
    • https://cdn.sqhk.co/xataruzepape/Jieifih/84575889624.pdfIn PDF document text
    • http://idealica-tufficiale.website/9574884393bted.pdfIn PDF document text
    • http://maska-respirator.com/jowaxipawuluzubnzu0.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/iLhbThg/foxumibokila.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/fenatagazise/blavatsky_the_secret_doctrine.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/40241471072.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/22929009659.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/lyme_disease_treatment_guidelines.pdfIn PDF document text
    • http://jonapepubenej.epizy.com/titukamexidomolazujorataj.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/concave_mirror_ray_diagram_worksheet.pdfIn PDF document text
    • http://fotiworoz.epizy.com/personal_financial_template_free.pdfIn PDF document text
    • http://viwuleraxukopiz.epizy.com/cars_as_fast_as_lightning_free.pdfIn PDF document text
    • http://busimutu.epizy.com/pufogudajurunozozukuj.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/consumer_reports_canada_laptop_computers.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/opencv_cmake_proxy.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_off0000f34e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34E 26340 bytes
SHA-256: 010861f2158317b6b604704a66710adee1cd21bf13b2bba5e6ee983ee6bd0723
font_01_sfnt_off000144c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144C1 5644 bytes
SHA-256: 1f80e00a8209d0175349879db1029aef4d9cbfc4544d7bafb4c27556e4652391
font_02_sfnt_off0001582b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1582B 10408 bytes
SHA-256: 1e0f42b2db9701789474810ad730c16ab1ff271d00f8f3ca299311492e5f6548

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