Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd4f9f8a6c58be1a…

MALICIOUS

PDF

70.6 KB Created: 2020-11-14 07:01:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8fc568ec11d37fa8900d5814d5cce771 SHA-1: daa39192b1419e31a8b1fc6c510670604e49b542 SHA-256: bd4f9f8a6c58be1adfd01aabc80325a7f5cd800b69b7e59fbca3d99df19b2974
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://traffine.ru/aws?utm_term=technicien+arpenteur+g%25C3%25A9om%25C3%25A8tre+formation PDF link annotation
    • https://vezerovir.weebly.com/uploads/1/3/4/5/134580053/30cfd0f56.pdfIn PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/nuzin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f8ccb53056f8.pdfIn PDF document text
    • https://tozowibalap.weebly.com/uploads/1/3/4/3/134383498/3392694.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381964/normal_5f9a763ee301e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410027/normal_5f935aa9d85c6.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://s3.amazonaws.com/kewakuko/nopagamotajobufubular.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26ba45ec-58b2-4111-a378-841ae10fd602/kasikovunawaz.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/noraligumajapatot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/933d008e-45e6-422a-9f42-8721b2f09032/toripab.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/wunuloruwoxu.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_off0000c73b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC73B 5332 bytes
SHA-256: 2d4d44ee25bd0264948519bfd6939e45a0a9a68c01128ecb248694cab7be7db3
font_01_sfnt_off0000d894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD894 11532 bytes
SHA-256: 45be4ed1582c2457a5d8683cf7df8431cb478855ac0c1a89231f25af36e2e5a4
font_02_sfnt_off0000fd54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD54 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230