Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5acb661424c6931…

MALICIOUS

PDF

77.7 KB Created: 2021-04-02 19:31:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3519a382a4b1a8a7ffa82097bd97d254 SHA-1: 6c51576977af003317fc08aedbaaa50c613779db SHA-256: f5acb661424c6931dacc9d3664644a1ac63b68a04d827883720875db8b67e803
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'white ox gloves', further supporting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=white+ox+gloves
    • http://josumewemuzob.getenjoyment.net/how_do_i_lookup_my_driving_record_online.pdf
    • http://vugezaselefobop.iblogger.org/audio_editor_app_for_pc.pdf
    • https://saguwaxofules.weebly.com/uploads/1/3/2/6/132681351/rejejibatitapaka.pdf
    • https://ketumumev.weebly.com/uploads/1/3/5/3/135348104/tofixeduluwob.pdf
    • http://sifuzifixezija.medianewsonline.com/brihaspativar_vrat_katha_download.pdf
    • https://gitijekukojijot.weebly.com/uploads/1/3/4/6/134626905/4945452.pdf
    • https://gogabaxada.weebly.com/uploads/1/3/4/8/134852864/9941368.pdf
    • http://rajukeno.22web.org/what_is_the_overview_of_a_book_called.pdf
    • http://wavepolabipal.22web.org/anorexia_books_download.pdf
    • https://lomizagufefeg.weebly.com/uploads/1/3/4/0/134096038/gerixusa.pdf
    • http://xesifavaner.22web.org/national_spelling_bee_words_2020.pdf
    • http://zelumefepa.sportsontheweb.net/gosoj.pdf
    • http://linavaluviriv.getenjoyment.net/auto_electrical_wiring_basics.pdf
    • http://rakomakefike.iblogger.org/gabung_file_jadi_satu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tupiremere.epizy.com/vebabelewimajiwoloj.pdf
    • https://s3.amazonaws.com/nerugiraxura/business_folder_design_template.pdf
    • https://uploads.strikinglycdn.com/files/b3790020-70be-4da0-8945-42b4d691d37a/2005_jeep_grand_cherokee_laredo_stock_tire_size.pdf
    • http://xobibaga.myartsonline.com/82140233219.pdf
    • http://situxunekidini.epizy.com/lotus_caravans_tremor.pdf
    • https://s3.amazonaws.com/dagasopones/xefamemililu.pdf
    • https://s3.amazonaws.com/fixararololu/63218297890.pdf
    • http://wejelinemadagep.rf.gd/gozekozokinujofunek.pdf
    • https://s3.amazonaws.com/nazekisigiduz/bijomamuvebevo.pdf
    • https://s3.amazonaws.com/zalomi/fifofarawesobilulumanar.pdf
    • https://uploads.strikinglycdn.com/files/eafe8c5e-e6d7-42e4-baf1-2c7479f7d9a0/is_girl_boss_having_a_season_2.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f141.bin
ad91a5bff81426057ac23e427eea7e503d4398870c42ddee14f7edfab3c866b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF141 4784 bytes
font_01_sfnt_off000101a3.bin
2a2d5b2a3c50ee2111997f2a7ff092a5e97ce9b67cc11366ef4a471c75bf6a82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101A3 11752 bytes

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