Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb2ece8d0abc4472…

MALICIOUS

PDF

119.7 KB Created: 2021-03-09 23:10:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 04beeae22f4b46f55da83482b410396a SHA-1: f5025595f1e10929f37a44787a0b1f293e5c4a39 SHA-256: bb2ece8d0abc44727b2cfbcae93332af39b4ac6f10d389c556b263f46d2b620b
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting it is used for phishing or to download a secondary payload. The document body, though heavily obfuscated, contains keywords that might be used as a lure.

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://baarspo.ru/strik?utm_term=970a+g43+bios+key PDF link annotation
    • http://kopogaxepaku.sportsontheweb.net/jotezujogagofitede.pdfIn PDF document text
    • https://cdn.sqhk.co/raserijene/jageha4/18770671162.pdfIn PDF document text
    • https://cdn.sqhk.co/wepiwojeta/mCmhfie/tamifafubi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4dd494a-d36d-418f-a4d8-9f0fff0aac04/material_science_and_engineering_jobs_in_ghana.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/54341834074.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/36516080441.pdfIn PDF document text
    • http://tefetuzuzip.myartsonline.com/accelerometer_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/25722918131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67cf9318-dce6-46d5-ba15-ec4760e55ecb/how_long_does_forklift_certification_last.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/75169028504.pdfIn PDF document text
    • http://tununik.epizy.com/95270115163.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/zuzorerevorenugatigi.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/flower_wallpaper_for_android_mobile_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a43151e5-4338-47eb-a356-3f33740c24a6/what_does_l_mean_on_my_thermometer.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/kufagorisufojegiti.pdfIn PDF document text
    • http://tavoxelelenasi.onlinewebshop.net/keresozubo.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/kalnirnay_dec_2018_marathi_calendar.pdfIn PDF document text
    • http://sosesejuwukoga.epizy.com/google_spreadsheet_transpose_rows_columns.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/nexof.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/como_hacer_un_programa_arquitectonico.pdfIn PDF document text
    • http://resilasijajatil.myartsonline.com/tumor_pseudopapilar_de_pancreas.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00019e3a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x19E3A 29212 bytes
SHA-256: 372b6337fcdd678cd6e676f68dd625c00b86aa2419c17314dce9cc9f88880732
font_00_sfnt_off00016561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16561 5568 bytes
SHA-256: ddde50165728aea9d0f1becd85757985283baaed849b37a55ce71d8bcd031eb2
font_01_sfnt_off0001787f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1787F 11044 bytes
SHA-256: fa5b16a50ee46a4b6cb48d3dfb7d09cbfb3a6dd7d99c95473d7cf17b28929ea2

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