PDF malware analysis — malicious · cce77de7b380f628

MALICIOUS

PDF

67.0 KB Created: 2020-12-22 04:50:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 86413d4cb0a8155a5e3f173db91ede8f SHA-1: 7239a47c957eb8fb9753f242ea621c95ff612f81 SHA-256: cce77de7b380f6280a6f73c069e8cdc68466a8d1d73d0dd87947d5257f85afbf

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that leads to a domain associated with phishing activity. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic point towards a social engineering attack.

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://trafficel.ru/aws?utm_term=dance+recital+ad+template PDF link annotation
- https://cdn-cms.f-static.net/uploads/4417405/normal_5fad5e655f68a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450864/normal_5fbc645249ec1.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4419001/normal_5fe02c14074c6.pdfIn PDF document text
- https://mefupajudeto.weebly.com/uploads/1/3/4/8/134883840/5660465.pdfIn PDF document text
- https://zexunipubu.weebly.com/uploads/1/3/4/8/134877105/6630662.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383452/normal_5f9174675b78f.pdfIn PDF document text
- https://miwilokak.weebly.com/uploads/1/3/4/3/134375457/97c2ccbd3.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://static1.squarespace.com/static/5fc00a03c6229360eca839ab/t/5fc0d7d79b1ed03538fb2d4d/1606473687811/javawifuwi.pdfIn PDF document text
- https://s3.amazonaws.com/viromibukoleliw/best_1080p_movies_sites.pdfIn PDF document text
- https://s3.amazonaws.com/sinamozagemoger/wezujojapedexetaw.pdfIn PDF document text
- https://s3.amazonaws.com/wajufifenoxuj/toastmasters_area_directors_report.pdfIn PDF document text
- https://s3.amazonaws.com/gelawiweza/21011542189.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_off0000c9bf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC9BF	5040 bytes
SHA-256: `0e03c344b32f33dddd9aeaf40e97dd0eddf22336e16d4cf1e7406487d1047fa9`
`font_01_sfnt_off0000dacc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDACC	10716 bytes
SHA-256: `55394b933c88a886288830855cb22dd8c69fdb44e006195ba4a1509d7180e93d`

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