Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e8c842746c2926d…

MALICIOUS

PDF

81.6 KB Created: 2021-04-01 02:30:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ae4a043a8b8efca84e28e9693f491ea SHA-1: 55c4bccb135f9ddbeec420cf0ecb965597e1a6e4 SHA-256: 0e8c842746c2926defc8e793426706563260143d38d99e2f9867c892f4192087
104 Risk Score

Malware Insights

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

The file is a PDF that contains an external URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The presence of a visual download button lure further supports a phishing or social engineering attack. Although no scripts were explicitly extracted, the PDF structure and external URI suggest it's designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crophysi.ru/award?keyword=encyclopedia+of+general+science+for+general+competitions+pdf+download
    • https://cdn.sqhk.co/gepabafi/jihaeZv/hex_empire_2_game.pdf
    • http://boforotaje.mywebcommunity.org/how_quickly_does_light_therapy_work.pdf
    • http://zafikapasipugog.medianewsonline.com/difference_between_acquisition_and_learning.pdf
    • https://cdn.sqhk.co/zowolanazew/cf68hbX/best_free_parental_control_app_for_iphone_2019.pdf
    • http://vuwazakuzasoz.iblogger.org/9790565915.pdf
    • http://zeboxagekej.sportsontheweb.net/captain_underpants_books_amazon.pdf
    • https://cdn.sqhk.co/jemitaso/UPgjUJ3/blend_3d_models.pdf
    • https://cdn.sqhk.co/senagoxosog/e62Qgg3/origami_star_box_with_lid.pdf
    • http://tukameduk.22web.org/43475403047.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://s3.amazonaws.com/fodose/nesadoguvufe.pdf
    • http://widaliwadon.epizy.com/31222278811.pdf
    • https://s3.amazonaws.com/dudurat/92691986410.pdf
    • http://jefitanebigovun.rf.gd/comparing_decimals_worksheet_for_grade_6.pdf
    • https://s3.amazonaws.com/votawawo/gogunozaluzur.pdf
    • https://s3.amazonaws.com/wovisak/juzenowitusabupi.pdf
    • https://s3.amazonaws.com/fakuguvil/25834693224.pdf
    • http://zakivijojinikij.epizy.com/eular_guidelines_2018.pdf
    • https://s3.amazonaws.com/gelawiweza/top_android_games_hd_graphics.pdf
    • https://s3.amazonaws.com/sefiwegegagu/89539273065.pdf
    • https://s3.amazonaws.com/nefunupu/photo_frame_templates_psd.pdf
    • https://s3.amazonaws.com/tajimipojimo/21056051111.pdf
    • https://s3.amazonaws.com/rizoli/theological_dictionary_of_the_new_testament_volume_6.pdf
    • https://s3.amazonaws.com/vipuxafol/pifamikulonekuwizidorebo.pdf
    • https://s3.amazonaws.com/bezorito/bob_evans_pancake_calories.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f203.bin
c9a064bca4cbcd8eb8b7da50e81a8531f606f115b5562279d4bf433314ed48fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF203 5628 bytes
font_01_sfnt_off00010536.bin
4ebd48784e647e0c298a152dbbc81279b70958ea2014a9235a5623a490086bf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10536 11244 bytes
font_02_sfnt_off00012bc0.bin
b36887c4a7c7a3433e89771280e832680810e4ebd2b7337407c7dbe608e95547		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BC0 3096 bytes

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