Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b9507e19a69fb96…

MALICIOUS

PDF

71.7 KB Created: 2021-01-03 05:46:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: da52b451189c20ff4e5a378628c84b0d SHA-1: e1fb33b53453e8078c3796eb6845e22fec8c0984 SHA-256: 5b9507e19a69fb96a7b074b417e0fedc0f59319c2ec5ad0e0113489ccdb4b677
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://trafffi.ru/aws?utm_term=adjektivdeklination+deutsch+%25C3%25BCbungen+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4451766/normal_5fe4155a26822.pdfIn PDF document text
    • https://cdn.sqhk.co/pasepizut/zcgcgaA/super_wings_character_who_israel.pdfIn PDF document text
    • https://dudafenerow.weebly.com/uploads/1/3/4/9/134900552/caf19.pdfIn PDF document text
    • https://kaxobemux.weebly.com/uploads/1/3/4/6/134676595/besowalowulem.pdfIn PDF document text
    • https://cdn.sqhk.co/wezopexa/Bkcnjik/abstract_id_card_template_vector_illustration.pdfIn PDF document text
    • https://cdn.sqhk.co/nonuripot/wibBNRu/polaxivukexeruvepido.pdfIn PDF document text
    • https://tonulolini.weebly.com/uploads/1/3/4/3/134341491/361d7f5.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/wudibirewuduto/apk_google_play.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/story_character_development_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/zadakonorepobusabenupidim.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/vtech_train_set_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gonavo/69322124221.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB85 5772 bytes
SHA-256: 183b2e3a06edfb9ba3745ed3300c79acc247edeb6415bb9d9bb0b6ed7207fc09
font_01_sfnt_off0000df00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF00 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off0000ea63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA63 11084 bytes
SHA-256: e44e82a3e8010dd8e3c6d19e32c0338eb6089799a95945dbf5df4757495fc082