Malicious PDF — malware analysis report

Static analysis result for SHA-256 7664a08483a5ff31…

MALICIOUS

PDF

128.1 KB Created: 2021-03-19 12:39:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: d56a5bf6c4bf93a1c202d9c1a77eb2a2 SHA-1: d14b6cca29f60e48aff9ef620734292c52e59d31 SHA-256: 7664a08483a5ff3151723e40843ec408968ef8813fcd058fd0cf6548028e968d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics and ClamAV as malicious. The ML classifier also flagged it with high confidence. The document body, though partially corrupted, suggests a lure related to the 'ATP World Tour calendar 2018 PDF', likely intended to trick users into visiting the malicious URL for phishing purposes.

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://ponafet.ru/123?utm_term=atp+world+tour+calendar+2018+pdf PDF link annotation
    • http://werenntaq.online/how_to_install_hp_officejet_6500_wirelessc8n58.pdfIn PDF document text
    • https://cdn.sqhk.co/jabakujivim/dfJjhjc/lanulogolugadili.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491451/normal_5fc6af5f9f8b5.pdfIn PDF document text
    • https://cdn.sqhk.co/duponetix/jgdmhjw/loaded_baked_potato_casserole_allrecipes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454822/normal_5fcec12e29b2e.pdfIn PDF document text
    • http://ergors.space/26335875870qptuq.pdfIn PDF document text
    • http://kovexuxufolaz.iblogger.org/pensar_la_arquitectura_peter_zumthor_gratis.pdfIn PDF document text
    • http://nofomox.22web.org/laxilodenutabati.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389365/normal_604cee3b4daee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446776/normal_60102ab6e6bbe.pdfIn PDF document text
    • https://cdn.sqhk.co/joraxeneli/gcAxhgg/rumalobo.pdfIn PDF document text
    • http://my-favshoph.online/57427234278h3mnc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390051/normal_5fd3af01365d4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://romigutik.epizy.com/xewot.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/sizajomufujatofizumol.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/black_desert_mobile_giant_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/rational_inequalities_worksheet.pdfIn PDF document text
    • http://boponewutizubi.rf.gd/eal_resources_free_worksheets.pdfIn PDF document text
    • http://bupomejov.epizy.com/fha_appraisal_well_and_septic_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/transformation_bacteria_animation.pdfIn PDF document text
    • http://wobagelamabix.rf.gd/91912430189.pdfIn PDF document text
    • http://pavebutom.epizy.com/catch_me_if_you_can_cast_list.pdfIn PDF document text
    • http://ruriwujuvuwa.epizy.com/agri_fab_lawn_vacuum_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A33A 5572 bytes
SHA-256: c621bde6914422d652e55499261233c58cabd140d1e3b16a00aff9cb50fa35bd
font_01_sfnt_off0001b648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B648 2232 bytes
SHA-256: 8a7f8eea04b915600643f7e0df6f6ae61d22c4365d7f2eac701858e33821d7a5
font_02_sfnt_off0001c058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C058 16848 bytes
SHA-256: c3379bb2dd212ee78469ede8f6d7b11192ba2acf16c8721a0d3e0512eb9d881b

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