Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8ac6287c822f11…

MALICIOUS

PDF

81.1 KB Created: 2021-03-30 15:27:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f27a192a575bf72956164aeaf94d4696 SHA-1: e3b53e82038fe41306bf24707d0b4dac3c002b31 SHA-256: aa8ac6287c822f1150f7e3cdbb6d6258a2a735caff04778e5b10b73652fda5d5
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://jacksth.ru/strik?utm_term=educational+psychology+review+impact PDF link annotation
    • http://jabilevij.mypressonline.com/98022057318.pdfIn PDF document text
    • http://lisifakus.66ghz.com/20809917571.pdfIn PDF document text
    • http://tofoxewesaxizuz.mywebcommunity.org/brother_mfc_7860dw_print_configuration_page.pdfIn PDF document text
    • http://wosedumuf.mywebcommunity.org/67370206287.pdfIn PDF document text
    • http://disetikala.22web.org/graphic_design_jobs_salary_in_bangladesh.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/gidigcL/skipping_rope_exercises_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/sojuzafu/qRgdhjC/block_strike_mod_apk_new_version.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedumizikel.epizy.com/blood_pressure_monitors_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/chimani_pakhar_marathi_movie_all_song.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/82745443908.pdfIn PDF document text
    • http://xumuritikoxuk.myartsonline.com/82838839809.pdfIn PDF document text
    • http://fawivemepogu.epizy.com/cinema_paradiso_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/23207122575.pdfIn PDF document text
    • http://xidixisugatifes.epizy.com/73325523977.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/best_new_yorker_magazine_cartoons.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/24307713108.pdfIn PDF document text
    • http://kipirigup.rf.gd/conveyor_belt_images.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_off0000f112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF112 5580 bytes
SHA-256: 016bc454f22ec247a9d223bf2ef36dadf4055ab1f797be9fa5bab329aad2fa2a
font_01_sfnt_off000103f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103F2 10904 bytes
SHA-256: e78e59beb469d1d30948ec88bd8343d26cb40df194ad9f038270876870d81287
font_02_sfnt_off00012901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12901 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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