Malicious PDF — malware analysis report

Static analysis result for SHA-256 c638e3784f3a41ba…

MALICIOUS

PDF

202.2 KB Created: 2021-02-22 06:11:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: b8af6f07086067107143856f53eb79a9 SHA-1: eb67ade7a686202f85bc2e9f162dd791b104790e SHA-256: c638e3784f3a41bab6add1408249ecb67cd03480713c5a23aec3b2c7788c1cb7
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'bologen.ru', which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to a game, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://bologen.ru/123?utm_term=goblin+sword+shadow+temple+level+2 PDF link annotation
    • https://cdn.sqhk.co/runetonorox/haihXhh/befulowijugefomo.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/hgidQ6e/dan_the_man_original_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetijesi/gd2U1ha/shared_service_company_in_the_philippines.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/fghEbjb/t_mobile_deals_2_iphones.pdfIn PDF document text
    • http://mabirimelu.iblogger.org/pufos.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/TvNgfut/drastic_ds_emulator_apk_english_download.pdfIn PDF document text
    • https://mupexopuwes.weebly.com/uploads/1/3/4/7/134722910/gasetusox.pdfIn PDF document text
    • https://cdn.sqhk.co/kimefutif/6hf25Z6/mind_games_during_pregnancy.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/iaYXhid/ww2_bomber_board_games.pdfIn PDF document text
    • https://cdn.sqhk.co/nurofiwele/fnhhgRQ/xokavufuwazupuxuji.pdfIn PDF document text
    • https://mozufidapu.weebly.com/uploads/1/3/4/0/134012608/zisodumotodibazub.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/Ycyi1hf/best_designed_knife_sharpener_2019_uk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zipodanej.rf.gd/combining_like_terms_video_8th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/berman_center_performing_arts_west_bloomfield.pdfIn PDF document text
    • http://xijixabomama.rf.gd/mp3xd_gratis_para_celular_online.pdfIn PDF document text
    • http://varoniwarovez.rf.gd/natitepajub.pdfIn PDF document text
    • http://kotopogo.rf.gd/alphabet_colouring.pdfIn PDF document text
    • http://tidewoxawutose.epizy.com/dancing_ballz_mod_apk_1._4._9.pdfIn PDF document text
    • http://vapovalexuma.epizy.com/ledojepedakepijupa.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/oscar_hollywood_movies.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_off0002e049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E049 5656 bytes
SHA-256: 2cfa881035accf1d7f546837eb512a1bb493b5be99ebcf75468484672f30d2f2
font_01_sfnt_off0002f36b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F36B 11104 bytes
SHA-256: 17993afd5c2ef520b81020bdd55fffdb595fae80160875c8030bb31be7ca300b

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