Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5bb7d3c9ee12d45…

MALICIOUS

PDF

73.4 KB Created: 2021-02-17 02:53:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 383747a8399595209ca93670df944cab SHA-1: ce1dd6c0fda8528f306cb2d903515f86efb9fd41 SHA-256: c5bb7d3c9ee12d451c2bd5a8aeecc4cbbe4cd4bf4c9ff0f52b2e1498742c1d74
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/strik?utm_term=are+onkyo+av+receivers+good PDF link annotation
    • https://cdn.sqhk.co/gadewekunel/hgkjh8A/bojetapota.pdfIn PDF document text
    • http://espacecmb.xyz/con_te_partiro_piano_sheet8vcaw.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/spggyib/fivenesafixisimujew.pdfIn PDF document text
    • https://cdn.sqhk.co/dudilabatod/blKgths/vitasuke.pdfIn PDF document text
    • https://cdn.sqhk.co/nixivezez/jdfjjha/portal_mod_for_minecraft_1._16.pdfIn PDF document text
    • https://cdn.sqhk.co/nasanoroge/hagh2hg/dutalobigatoje.pdfIn PDF document text
    • https://cdn.sqhk.co/susojitigi/vngdMhg/wikipedia_my_little_pony_pony_life.pdfIn PDF document text
    • https://cdn.sqhk.co/rivotoxupow/VgfFrKR/pocket_watches_for_sale_australia.pdfIn PDF document text
    • http://bigowet.xyz/meguvosuzs0h3.pdfIn PDF document text
    • http://solent.bar/msh_brain_manuale_italianoubipt.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/vasofirida/gizixasuwoxogemexufisi.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/asics_gel_lyte_iii_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/ronopolifinozew.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/pakufezezigesemukoxik.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/stay_focused_pro_cracked_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/bengali_full_movie_sathi_hd.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_off0000df78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF78 5288 bytes
SHA-256: 28d192a89d854c708fa8f51aff9d4383c9a6597626258e0d679101703cf99eb5
font_01_sfnt_off0000f197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF197 11564 bytes
SHA-256: f8bb1c4eb75520fa8719d9520ce36cac1bb3fb5f0374fb7fd6e8f911567f7427

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