PDF malware analysis — malicious · ce87037d83e12c81

MALICIOUS

PDF

63.1 KB Created: 2020-12-31 18:57:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: dee7eefe47d43bc504b1358753b0d15b SHA-1: 9fb8018952938d45065e392e805d8dcf9eb9ab61 SHA-256: ce87037d83e12c81c2ece223f0d1ab8161520567085ca7675f4ecf8df9a57b8a

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The PDF structure itself appears to be intentionally malformed, with duplicate object bodies, suggesting an attempt to evade detection.

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://traffset.ru/strik?utm_term=scor+pal+tape+dispenser PDF link annotation
- https://static.s123-cdn-static.com/uploads/4375200/normal_5fddb728a24dd.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4387699/normal_5fc3bccb8d15e.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/fixararololu/tojesixutaboraselisixabo.pdfIn PDF document text
- https://s3.amazonaws.com/jiguwuzobozobaz/13890354384.pdfIn PDF document text
- https://s3.amazonaws.com/rizijubovapuk/nelaxatowemibib.pdfIn PDF document text
- https://s3.amazonaws.com/mefovu/centralismo_en_mexico.pdfIn PDF document text
- https://s3.amazonaws.com/posufij/doctors_note_template_for_work.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b5bb72fe-6567-4425-bc98-c3505a2fcf59/90613972008.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b710f113-dc7d-4924-91ae-822ceecd14ac/fafupel.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/34e28df6-5d69-4bd7-aa9d-78d54b541884/uline_storage_bin_cabinet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f33ff6b8-9350-48ba-ba45-760564ae8c69/49442083789.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000bb6f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBB6F	5168 bytes
SHA-256: `98fe9adb833416befb147089d78ecf90726998beda62d2f00d69be6bc3081240`
`font_01_sfnt_off0000cd0f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCD0F	10276 bytes
SHA-256: `0d72b9fbf226f6199d242ab0e994fd00501e97d58a69ae8cfa6c0545974b9ebd`

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