Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9d5c674e6088ffb…

MALICIOUS

PDF

89.5 KB Created: 2021-03-15 09:14:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 42ff0f9ed78c978d29d3e2b8554836b7 SHA-1: dfb7625a47f8da84208cb239204e79a7dc523d0f SHA-256: e9d5c674e6088ffbc3fd83c53531c220cb8bd8857b0d4533dfae43f5b277e6c3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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://xajibur.ru/wix?keyword=empirical+formula+worksheet+gcse PDF link annotation
    • https://cdn.sqhk.co/fupupusamun/ChgnbRQ/kizogejosumigixiposilod.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/iEYhiL5/age_of_civilization_2_guide_tips_and_tricks.pdfIn PDF document text
    • http://nafarami.medianewsonline.com/what_would_be_an_examples_of_psychoanalytic_theory.pdfIn PDF document text
    • http://pejelurim.getenjoyment.net/kaxelixe.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/eccb4fc9-391d-474d-80cc-e4b7a5c68b9e/96823319003.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/bitten_book.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/ir2110_mosfet_driver_datasheet.pdfIn PDF document text
    • http://xowobovu.myartsonline.com/formulas_volumenes_de_cuerpos_geometricos.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/pesuturopogijis.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/attack_on_titan_season_3_english_dub_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/what_are_the_rivers_of_europe.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/electrons_in_atoms_worksheet_key.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/35606463422.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3ad576a-b35e-441b-8485-ad5c02981e40/66117109718.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/10312839904.pdfIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/tukokil.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/gipiwitiretizomusubi.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/platformer_games_steam.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_off00011f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F01 5544 bytes
SHA-256: b66bbecfc4fbc2b0dc6a66b1c5078bda6b23a4f6212416238ea9db1151374da1
font_01_sfnt_off000131cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131CB 11452 bytes
SHA-256: c5e20c51c6d159673d4964bba5b067ab218937a57b0eba90f949f12cb388547b

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