Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dda709b7157055d…

MALICIOUS

PDF

70.1 KB Created: 2020-11-14 19:52:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b96a2b972b862f7c0d9d86af73522cd4 SHA-1: 3f6b9ff23d13dfc88e2c757a2a2329e161abbf7b SHA-256: 5dda709b7157055d660a1f0d4d26f8c3579874b02597cea3689f0aae25ba8f63
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 0.9998

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://trafffe.ru/aws?utm_term=coliform+mastitis+histology PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tadovu/pisciculture_hors_sol_au_cameroun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38494331-2701-4bd4-89ca-df864f8b36c5/xxxtentacion_look_at_me_lyric.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86b6cdab-898a-4770-b279-73636632e46e/aquatech_5_15.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd092625-1561-43bd-8f6c-9cd67cde1df9/64665107498.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/791589505.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/364ec0d3-dbfe-4a4c-86e0-4c532fdf925f/european_buying_office.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/domepugudojilugew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7850e12-f6a6-4801-a9c1-4e093ee8c0db/xutakevobixofopitivofi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b60beee-54e4-45fd-b4e2-821044b6ff97/kebasakafotizarip.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/8760243079.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bfb3bbe-4d3f-456f-80c4-214a06b86229/fivoritigex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e61a5288-116f-476c-95db-d3942964397d/dojolome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/381b07e9-68fa-4762-9f4f-b2bcf1905500/73891049815.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/liberty_local_schools_liberty_ohio.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/25832269262.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD409 5188 bytes
SHA-256: d248c881eac8fd1d8a46458ab8a38d8e5ed9183c8e0f393d8eeff506def32053
font_01_sfnt_off0000e588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE588 12092 bytes
SHA-256: 15c098bc02acd9a9ff553860190158ccf7881d9593f36e87808d5653774fe4be