Malicious PDF — malware analysis report

Static analysis result for SHA-256 266f989a415a6c48…

MALICIOUS

PDF

77.4 KB Created: 2021-02-19 20:13:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ade492544eea4c58e06f7288a326e41c SHA-1: b77938d8399d024905e704fd62c9d892010d5ffb SHA-256: 266f989a415a6c4854a410c592b7dbe7650deb83541a5024d17fdf4223abf2a0
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to donating clothes for money, directing users to a malicious URL. ClamAV and ML classifiers strongly indicate malicious intent, consistent with phishing or malware distribution. The embedded URL is likely used to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/123?utm_term=where+can+i+donate+clothes+for+money PDF link annotation
    • http://keysecret.ru/how_to_make_percentages_into_decimals3zfo4.pdfIn PDF document text
    • http://podipotekoi.ru/musica_de_adan_zapata_mixf5tmz.pdfIn PDF document text
    • http://twoup-viktoria.online/poxototutajulibovoruveme4mk2s.pdfIn PDF document text
    • http://present-mag.ru/dizitelavowupoxutelaxijobp1wj3.pdfIn PDF document text
    • http://romeita.space/fractionation_technique7dgw0.pdfIn PDF document text
    • https://vujewixijul.weebly.com/uploads/1/3/1/4/131437312/2745050.pdfIn PDF document text
    • http://nukicew.xyz/how_to_say_hi_in_chinese_in_english0a95e.pdfIn PDF document text
    • https://wazumiwu.weebly.com/uploads/1/3/6/0/136038811/d5cc81c31ff.pdfIn PDF document text
    • https://rivepolimuf.weebly.com/uploads/1/3/0/8/130813401/jazegofagupobisate.pdfIn PDF document text
    • http://top-salez.site/25522401058z0pvs.pdfIn PDF document text
    • http://goproits.com/66454215644qq4r6.pdfIn PDF document text
    • https://duxoberadu.weebly.com/uploads/1/3/4/7/134718286/1b70ec7.pdfIn PDF document text
    • http://sexedate69.site/widoxesopetiwizn3np4.pdfIn PDF document text
    • http://aydym.club/vex_iq_parts_postervkrpp.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/jesidofefe/oxford_dictionary_free_full_version_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/what_shotguns_have_slam_fire.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/a_b_c_d_rhymes.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/cvc_worksheets_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/compressed_non-_asbestos_gasket_sheet.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_off0000f06e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06E 5376 bytes
SHA-256: 97d8b949f3724ac75059b5477eff3e38da6e29a0709e20b7cee18931ba9b3944
font_01_sfnt_off000102a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A2 10956 bytes
SHA-256: 8373d74b483bb1af97408670331642434f9225df2bfcaed35ef501e6ee87e9ac

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