Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ad9432a67e589c2…

MALICIOUS

PDF

67.5 KB Created: 2020-11-26 01:55:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 4b36b5a21efe3ea6cfbf20c88a0bee4a SHA-1: d8f0c527e329801e691d4976b5263cd738b45cc1 SHA-256: 6ad9432a67e589c299aa8fd90131d66077eeba0ff43c5481307155943aed3918
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://traffking.ru/strik?utm_term=whitestown+youth+hockey+schedule PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6f41763-bb24-42e4-b141-cef4baaed49a/maya_tamil_movie_hd_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3f685d1-7b41-49eb-9248-29a514426eb1/xeresowutora.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/cutting_edge_movie_1992.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a38c4689-3ca6-49b7-a438-c875ae00e431/communicating_in_groups_applications_and_skills.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11090f1b-a233-4a10-9827-db95e442c54e/xofigivalurufutemimad.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/22381356940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a2a4cd0-9bc1-47f2-8173-b590d13d5d79/fedimoto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61e4853d-16af-4442-8995-45f6e7c64f72/the_a_game_nine_steps_to_better_grad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ea5f683-bd51-43a0-8c4c-e4ed2dfc4d70/problemas_de_operaciones_combinadas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b676c668-9c46-469e-8104-fd310f00aa4f/48981662400.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/aushadhi_paudhe_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b5bf40b-e488-40ba-9b0d-e0155a782797/vepidit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81625e3e-b4f3-4f8b-8bfd-813aba2d85c7/35993868193.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ba10565-38ac-43c1-a754-9bfe89bc31d6/cell_cycle_and_cancer_worksheet_virtual_lab.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6D5 4992 bytes
SHA-256: b8cbc2108784b8e82d5b3186a3279bd6fc156f7c0239aeea696e1c73ade145cb
font_01_sfnt_off0000c7f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F0 10716 bytes
SHA-256: d421d31ee2d8bacd8f42e4519fbadbbd68dce94c3e3b4d9abe722b6ecfeb8e81
font_02_sfnt_off0000ebd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD1 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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