Malicious PDF — malware analysis report

Static analysis result for SHA-256 162c98a30c1e7799…

MALICIOUS

PDF

74.7 KB Created: 2020-11-18 04:33:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9d334daba4ed629c09d10e74ad4ccaa6 SHA-1: 76062db8f385e25153c1bbbb25d605895cac4a27 SHA-256: 162c98a30c1e77991568c7be458c669f1168d7b4a257c7b7beb4c347383f856a
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/123?utm_term=tiempos+verbales+en+espa%25C3%25B1ol+tabla PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388814/normal_5fafab072bcaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455399/normal_5faa3fe0ee258.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366024/normal_5f93da7dbad13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388405/normal_5fa75be9e70f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3543da65-1362-4036-b0ee-5c2eea00fcdd/nelokinegesarosulikezeju.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/download_pinoy_movies_for_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/58854648971.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad316751-3018-418c-83e7-4276ae138e6f/nijuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3b29156-a78d-4ea2-836b-1b0a5e39a3f9/tmc2100_stepper_driver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bafd394-5a42-451e-be40-2d17e5d05499/bodifufonigurotisagereme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa3c24db-ef84-430e-9085-89f145771a54/ftb_starter_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d85f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD85F 5112 bytes
SHA-256: 4f1a60764145c9ff45d4acf6c8496988c09b39b42b3ccdd1af4957457b8136dd
font_01_sfnt_off0000e95a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95A 11200 bytes
SHA-256: 975bf50667d8ea9f30062bf6f1b8bae3568e6ed029506a8e1d7e73fe80cbf201
font_02_sfnt_off00010dcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DCF 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176