Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f50ea1119ffc70c…

MALICIOUS

PDF

82.2 KB Created: 2021-02-15 09:49:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 97d3c09509c45e80223522bb46336637 SHA-1: 0861780d7acd71b57ec9631c59192a8e99f0695b SHA-256: 7f50ea1119ffc70ccf96eb976c51281facf7eead41d7e9865713f77848dba146
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains an embedded URL that leads to a suspicious domain, likely intended to host malicious content or redirect the user. The document body, though heavily obfuscated, contains a title that appears to be a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=underworld+empire+best+lieutenants+for+assassin PDF link annotation
    • http://virona.org/rorajesudinenekupafifviug.pdfIn PDF document text
    • http://timelessdecorum.com/hamburger_menu_xamarin_forms_samplea3lx6.pdfIn PDF document text
    • http://unosital.space/nilajulilu5qhhp.pdfIn PDF document text
    • http://trysoda.club/bhai_cha_bday_vajle_bara_ringtonestw7e.pdfIn PDF document text
    • http://aires.fun/jaxisopupulofidexejivazuzvaqq0.pdfIn PDF document text
    • http://dkshlyap.ru/american_ninja_warrior_apkqc0e1.pdfIn PDF document text
    • http://helplnstagramcontact6088756.com/86215119356e8o41.pdfIn PDF document text
    • http://teksalon.xyz/sownictwo_angielski_c1wsn77.pdfIn PDF document text
    • http://lightly.store/english_placement_test_oxfordcrvpl.pdfIn PDF document text
    • http://mrshadow.net/simple_business_plan_example_for_coffee_shopc1ycx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/astro_med_tmx_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/mujoxixupugomilexi.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/bewafa_status_video_whatsapp.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/50215239482.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/android_file_transfer_pc_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/23923955967.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/dunonozusikezu.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/avengers_endgame_360p.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/31568206758.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_off000100d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D4 5412 bytes
SHA-256: a54e583ed6a302f1cf93c3d353dbe08d53622fad1ba1e4ff09121532d3fc6227
font_01_sfnt_off0001132c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1132C 11764 bytes
SHA-256: 21f67a7c4c77be7f7ca3247ff5b91caa97a96026a8b6222b1087b35dd4e7942a

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