Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1bcc4d215ab2aeb…

MALICIOUS

PDF

77.6 KB Created: 2021-02-23 21:48:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a17d2870f9f01de1502cd01f68173981 SHA-1: ab0c6b3216b7997f90594ad72484c1d01b642e78 SHA-256: d1bcc4d215ab2aebcc1cc050def9909048a9f4c428fce1138b5c1ebde7af875f
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an external URI pointing to 'baarspo.ru' which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to game cheats, suggesting a social engineering tactic to entice users to click on malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://baarspo.ru/wix?keyword=airport+city+cheats+2020+ios PDF link annotation
    • https://cdn.sqhk.co/fejisedetu/jj0higd/coloring_puzzles_printable.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390996/normal_5ff280ee075ea.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/hgcat5u/bitaluzofivilinagopenulu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464065/normal_5ffc4e0504d46.pdfIn PDF document text
    • https://cdn.sqhk.co/rizakumer/Aifpghi/download_border_light_led_color_live_wallpaper.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/aRr81E1/stick_bow_mastery.pdfIn PDF document text
    • https://cdn.sqhk.co/tudobele/ijeAz0V/fazowezologepugufose.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483873/normal_5ff4dde06c27e.pdfIn PDF document text
    • http://vojutivuzijan.22web.org/cuanto_mide_un_pie_cubico_en_cm.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/BPgcpyp/liwozamuvigo.pdfIn PDF document text
    • https://cdn.sqhk.co/pimepojuti/cLgdSjd/free_movies_2020_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/liguvikozo/e9giShe/sokuzamosagenitulokebix.pdfIn PDF document text
    • https://cdn.sqhk.co/jazepoxamib/bFtnjc2/doom_patrol_dorothy.pdfIn PDF document text
    • https://cdn.sqhk.co/kobewudojuvo/jbSifje/the_trip_to_greece_netflix_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/giahfjb/gitevevupabup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476152/normal_602a6bbab9713.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dorowoz.rf.gd/archlinux_installation_guide_virtualbox.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/60403622619.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/bedadibajaviter.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/geographic_information_system_jobs_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/kuzezejujezibus.pdfIn PDF document text
    • http://bonipoja.epizy.com/do_marine_officers_take_the_asvab.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/44066955637.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_off0000f3f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F9 5352 bytes
SHA-256: 52e9806de73f1295c70612af2e2c9284f3e8e36c65731712f61ef1cac0ae4fe4
font_01_sfnt_off00010633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10633 10240 bytes
SHA-256: ec16a519e9734499dd74f0dfe81a39dceeb3cb867c063ec187ac7d76c689c873

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