Malicious PDF — malware analysis report

Static analysis result for SHA-256 282d2cd29744cb5c…

MALICIOUS

PDF

223.7 KB Created: 2021-03-16 05:39:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33c34b15b42c07157d05699914e6c50d SHA-1: 7a9ab39c48f7d3634f9a05ec4f73e3766fc49a4e SHA-256: 282d2cd29744cb5c6aac77bd509613b8f24868786a57520a638d5a1813e6a233
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ClamAV detection and ML classifier also indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to sheet music, which is a common tactic for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6976

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://mezovuduw.ru/123?utm_term=introduction+and+rondo+capriccioso+piano+sheet+music
    • http://rulabepotinujeb.mypressonline.com/cashless_transaction_meaning.pdf
    • https://cdn-cms.f-static.net/uploads/4382639/normal_60134d701018d.pdf
    • https://cdn-cms.f-static.net/uploads/4384299/normal_60290118eeea8.pdf
    • https://static.s123-cdn-static.com/uploads/4448545/normal_6007c4f755963.pdf
    • https://cdn-cms.f-static.net/uploads/4478655/normal_6025ce8773d37.pdf
    • http://baxusajatos.sportsontheweb.net/wameruxan.pdf
    • http://gudelew.mywebcommunity.org/66562581802.pdf
    • http://nubatevujonuw.mygamesonline.org/annemarie_schimmel_rumi.pdf
    • https://cdn-cms.f-static.net/uploads/4417305/normal_601178493d513.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nezanurugega/epp_foam_sheet_for_sale_philippines.pdf
    • https://s3.amazonaws.com/vibasujefir/latest_version_of_whatsapp_apk_for_tablet.pdf
    • https://s3.amazonaws.com/widetunipet/grass_cutting_quote_template.pdf
    • https://s3.amazonaws.com/lakadutof/2221477175.pdf
    • https://s3.amazonaws.com/gogunabones/atomic_structure_inorganic_chemistry.pdf
    • https://s3.amazonaws.com/norozovijalu/gibokojup.pdf
    • https://s3.amazonaws.com/gimisorixosu/losunudodipumamatexok.pdf
    • https://s3.amazonaws.com/povelenavuviw/columbia_business_school_case_book.pdf
    • https://s3.amazonaws.com/batiku/consumer_reports_best_rated_used_cars.pdf
    • https://s3.amazonaws.com/lofese/35858666807.pdf
    • https://s3.amazonaws.com/debiwelof/espn_nfl_injury_report_week_2.pdf
    • http://pesetunal.onlinewebshop.net/budismo_libro.pdf
    • https://s3.amazonaws.com/fotojipifuzitul/fractions_with_same_denominator_worksheets.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00029c45.bin
fa72874b8c381873b432d3b5cea9ecddba20f04e8e1c9face7d560df1136061a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29C45 6588 bytes
font_01_sfnt_off0002ac8f.bin
bde32341fe98fb37e1da1f47fbb3c43d3b68c6184271f09dd819f5994f2d2765		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC8F 25036 bytes
font_02_sfnt_off0002f736.bin
9459979812cb5bb32e2b9dd72811a112aa16674872a19bb2594d0b0b0570d3ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F736 5220 bytes
font_03_sfnt_off000308bf.bin
acf3528a2d8b9fcea8131bd84c59d52ccced5feaf1fbab7d633841fcd7ba867f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x308BF 2988 bytes
font_04_sfnt_off0003150c.bin
4a506ead21bf4072c0824f7453e6467ebba115635d6a8a31809c261dcea267cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3150C 14848 bytes
font_05_sfnt_off000344f9.bin
a5a2c3c75562e4eecda24f8875a2d4ec751e680681a52f230c962bc43ea6c690		 pdf-font-stream PDF embedded font (sfnt) at offset 0x344F9 18148 bytes
font_06_sfnt_off00035ef4.bin
29a007a8d9e6d066e42c967972d9aeb00fd36203d4dc78bf1a5c364d52fd48cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35EF4 6204 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.