Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfbc8706ff5ba8ae…

MALICIOUS

PDF

84.0 KB Created: 2021-03-06 10:23:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec1aa547dc8ee69b528590f6c666fcd3 SHA-1: a65691d8e09d30917dddd7092b12e805d38b6064 SHA-256: cfbc8706ff5ba8ae1327d73ae47155a74c6f42d22350a42937519c56783ac844
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 numerous embedded URLs, with the primary one being 'https://botokaw.ru/123?utm_term=how+to+make+your+own+lithium+ion', suggesting a phishing or redirection attempt. The document body, though partially corrupted, hints at a lure related to 'lithium ion' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://botokaw.ru/123?utm_term=how+to+make+your+own+lithium+ion
    • http://idealica-it.website/how_to_describe_a_sad_rainy_daypxokt.pdf
    • http://infokurs.design/9128504942461d78.pdf
    • http://lighttravel-ng.com/26908953919ieerf.pdf
    • https://static.s123-cdn-static.com/uploads/4449615/normal_5ffdd267aaef5.pdf
    • http://pubguckazan.com/teka_teki_silang_kompasorhg8.pdf
    • https://cdn-cms.f-static.net/uploads/4413454/normal_60307f3f344b2.pdf
    • https://cdn-cms.f-static.net/uploads/4409610/normal_5fdc1c333fa47.pdf
    • https://static.s123-cdn-static.com/uploads/4458421/normal_5fecd582b8476.pdf
    • http://onlinekartiadesi.com/44hyb5f.pdf
    • https://static.s123-cdn-static.com/uploads/4413866/normal_5fc92b3bc4451.pdf
    • https://cdn-cms.f-static.net/uploads/4411708/normal_5fe887e52e693.pdf
    • http://medicinfo.online/masesugatumigina6z.pdf
    • https://static.s123-cdn-static.com/uploads/4485435/normal_5ffb2f5b9d86b.pdf
    • https://cdn-cms.f-static.net/uploads/4407724/normal_6020312b5642c.pdf
    • https://static.s123-cdn-static.com/uploads/4418574/normal_5ff2485d8d06f.pdf
    • http://net-klientov.ru/annual_report_aeon_credit_servicedt3k9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mizeteb/ikea_malm_king_bed_weight_limit.pdf
    • http://jarobifuxoletow.rf.gd/how_to_install_sta_rite_well_pump.pdf
    • https://s3.amazonaws.com/jifesu/ejercicios_tipos_de_enlaces_quimicos.pdf
    • http://mutodilevo.epizy.com/mathworksheetsland_order_of_operations_word_problems.pdf
    • https://s3.amazonaws.com/jotizifime/cbse_improvement_exam_2018_date_sheet.pdf
    • https://s3.amazonaws.com/bulalowisu/kawufadobukosajakasinurax.pdf
    • https://s3.amazonaws.com/gewuwasi/20229920450.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ad2.bin
680e9302139d25b198440b7f0ee02c5456f592cb6a5d22e364239b38669c7cf4
pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD2 4968 bytes
font_01_sfnt_off00011b98.bin
274ff11e18e332ba2f524b130e10fd602e31feee8b50ea32478591557dbf4a1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x11B98 11764 bytes