Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f9b03b17ffe267…

MALICIOUS

PDF

74.2 KB Created: 2020-11-13 23:44:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d8fe9d25ff9023ac78c6943a258b9522 SHA-1: bd7b3eceaf2f4820cd34ac34686e13955410b83b SHA-256: 57f9b03b17ffe267ec3c917238042872e7dcce180492a9344fb3743939c2b03a
136 Risk Score

Malware Insights

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

The file is detected as malicious by ClamAV and an ML classifier, indicating a high probability of malicious intent. The presence of an embedded URI pointing to 'traffnew.ru' suggests a phishing or malware distribution attempt. The heuristic 'SE_SECURITY_BYPASS' indicates the document may instruct the user to disable security software, further supporting a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://traffnew.ru/aws?utm_term=coreldraw+2017+64+bit PDF link annotation
    • https://fategebedabeno.weebly.com/uploads/1/3/4/7/134718848/bcb576e4.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/cb9eb177-f9b6-4983-b99f-cabde9f1918c/58680978380.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18238488-65a0-4fc2-b175-1e710dcace43/85994893596.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/multivariable_calculus_early_transcendentals_3rd_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/bugesulewenozusedebed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b2c0c6f-1ee4-4e73-a8b5-98468fc34983/kamowizozo.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/dojipukevosig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5800a54f-ec55-42e7-8d31-11cf052490dd/quantum_numbers_worksheet_key.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/38762496461.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/aladdin_full_movie_2019_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gebaxovudofe/gijosinuxur.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_off0000d560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD560 5224 bytes
SHA-256: e0f5766890a7b77bc70976be180a315f7c4859d2fa8a27a319dc231d92447de1
font_01_sfnt_off0000e757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE757 11468 bytes
SHA-256: d6ee44843e600cb3e9c1fb0fff8e41f87ba6e1715fe56848b325335f417ff3f0
font_02_sfnt_off00010e14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E14 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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