Malicious PDF — malware analysis report

Static analysis result for SHA-256 b78b4a2fc6e52957…

MALICIOUS

PDF

72.0 KB Created: 2021-03-29 11:04:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 69820b9484c7bb67bee0d453772590cb SHA-1: 62472646a5c9551dc2e36637bb07327b01beffe5 SHA-256: b78b4a2fc6e52957b7457ab76d1d74b0ec3d1be25f7ccb85b699dd21eff6c980
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-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://midufefew.ru/strik?utm_term=ccna+cisco+press+book+pdf PDF link annotation
    • https://kadekorik.weebly.com/uploads/1/3/1/4/131453454/ca36c9.pdfIn PDF document text
    • http://vimobewawulipiz.mypressonline.com/kindle_fire_hd7_4th_generation_cover.pdfIn PDF document text
    • http://gagivukamuw.getenjoyment.net/19594688575.pdfIn PDF document text
    • http://kevakigev.medianewsonline.com/32280818332.pdfIn PDF document text
    • https://wixozini.weebly.com/uploads/1/3/4/3/134383912/kigaveluvumudo.pdfIn PDF document text
    • https://gupapuna.weebly.com/uploads/1/3/4/7/134726568/vivepex_jafuxemag_pilajibu.pdfIn PDF document text
    • https://fatitabo.weebly.com/uploads/1/3/4/7/134757356/napuketek_puduwubetuvuv.pdfIn PDF document text
    • https://cdn.sqhk.co/jesupasuzoku/Jidhcgj/setadepages.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/nanizafag.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/76551379719.pdfIn PDF document text
    • https://cdn.sqhk.co/bitowiso/aP1hj1t/8120325725.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/fajixe/the_jacket_by_gary_soto_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/accounting_standards_in_india_2018.pdfIn PDF document text
    • http://xowobovu.myartsonline.com/cual_es_la_presion_normal_de_una_mujer_de_30_aos.pdfIn PDF document text
    • http://wesatume.atwebpages.com/18066538949.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/android_phones_2019_unlocked.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/capricho_arabe_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/50984040843.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/greek_myth_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/38091040370.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_off0000da15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA15 5228 bytes
SHA-256: fe7a3e099c520f84502ce027e29bb8dc3c89637ce3c49f788134e8caa8ee64c8
font_01_sfnt_off0000ebe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE5 10948 bytes
SHA-256: b27f93c1e88bc7e9ca4af88b9eb870f5a1777689972f3008024156ef424e14de

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